{
    "model": {
        "rank": 3775,
        "code": "thing-q381155",
        "model_id": "vr.tr.sieve",
        "name": "sieve",
        "purpose": "Enable an agent to recognise a physical sieve, assess its suitability and condition, and determine how it may separate or classify a material safely and reliably.",
        "family": "Thing Registry",
        "category": "Physical world and living systems",
        "status": "research-draft",
        "kind": "thing",
        "plane": "PHY",
        "domain": "PHY.OBJ",
        "industry": "",
        "version": "",
        "url": "/models/thing/q381155/",
        "tier": 2,
        "score": 82,
        "payload": {
            "layer": "wikidata",
            "aliases": [
                "sieve (mining)",
                "downpipe leaf trap",
                "Freudenthal's sieve",
                "Şadara",
                "lint filter",
                "chinois",
                "zaru"
            ],
            "aliasCount": 7,
            "merged": 7,
            "knownIn": 82,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": null,
            "source": {
                "dataset": "wikidata",
                "item": "Q381155",
                "url": "https://www.wikidata.org/wiki/Q381155",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-07T15:07:27Z",
                "providers": [
                    "Codex"
                ],
                "breadth": "recalled by Codex without web access - no source was read",
                "missingProviders": [],
                "pass": 2,
                "cost": {
                    "grok": {
                        "seconds": 30,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.3\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a07c67-bd43-7960-a82b-f04b9549667c\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: sieve\nSense to describe: (none recorded)\nDomain code: PHY.OBJ\nAlso known as: (none)\n\n\nContext for this batch of 801 things:\n# Batch 004: 1001 registered",
                        "usd": 0,
                        "recall": true
                    },
                    "codex": {
                        "seconds": 79.3,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.3\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a07c67-bd3a-7bf1-aec0-f9dc12a6a046\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: sieve\nRegistry id: vr.tr.sieve\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\n\nContext for "
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q381155",
                "registryId": "vr.tr.sieve",
                "name": "sieve",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "PHY.OBJ"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q381155/",
            "model": {
                "registry_id": "vr.tr.sieve",
                "name": "sieve",
                "purpose": "Enable an agent to recognise a physical sieve, assess its suitability and condition, and determine how it may separate or classify a material safely and reliably.",
                "definition": "A sieve is a physical separation tool with a mesh or perforated surface that allows particles or fluid to pass through its openings while retaining particles whose size and shape prevent passage.",
                "scope_statement": "This model owns the sieve as a kind of physical separation tool: an apertured working surface and its supporting structure that allow part of a feed to pass while retaining another part, including manual, test and machine-mounted sieves.",
                "in_scope": [
                    "Apertured working surface, frame, seals and supporting components",
                    "Opening geometry and the material characteristics that govern passage or retention",
                    "Dry and wet sieving arrangements and required motion",
                    "Retained and passing fractions, separation performance and sample recovery",
                    "Inspection, cleaning, wear and application-specific suitability"
                ],
                "out_of_scope": [
                    "Complete screening plants and their drives, conveyors or process controls",
                    "Feed substances and separated products as independently modelled materials",
                    "Filtration systems whose separation depends principally on depth media, adsorption or membranes",
                    "Statistical interpretation and laboratory procedures beyond the sieve's own role",
                    "Mathematical and computational sieves",
                    "Individual product catalogues, commercial product lines and inventory records"
                ],
                "distinguishing_features": [
                    "A candidate has an apertured working surface through which material passes while another fraction remains; a solid sorting tray does not qualify.",
                    "Separation depends on access to and passage through openings, rather than principally on magnetic attraction, density separation or adsorption.",
                    "The sieve is the separating surface and its immediate support; an entire powered screening machine includes additional mechanisms and requires a broader model.",
                    "A test sieve requires an identified opening specification and applicable verification evidence; a household sieve cannot be assumed suitable for measurement.",
                    "Names such as screen, strainer and colander overlap in physical construction; intended separation duty and working-surface geometry must establish the boundary."
                ],
                "characteristics": [
                    {
                        "name": "Separation duty",
                        "kind": "category",
                        "unit_or_values": "particle classification | oversize removal | solids recovery | liquid drainage | other declared duty",
                        "why_it_matters": "Determines whether opening accuracy, throughput, recovery or drainage is the primary suitability criterion."
                    },
                    {
                        "name": "Working-surface construction",
                        "kind": "category",
                        "unit_or_values": "woven wire | perforated plate | polymer mesh | other identified apertured surface",
                        "why_it_matters": "Affects opening geometry, durability, cleaning and compatibility with the feed."
                    },
                    {
                        "name": "Opening specification",
                        "kind": "measurement",
                        "unit_or_values": "opening dimensions in µm or mm, with shape, nominal designation and tolerance where known",
                        "why_it_matters": "Defines the intended passage geometry; a mesh designation alone may not establish opening size."
                    },
                    {
                        "name": "Effective sieving area",
                        "kind": "measurement",
                        "unit_or_values": "cm² or m² of usable working surface; open-area proportion in %",
                        "why_it_matters": "Helps assess loading and available passage area."
                    },
                    {
                        "name": "Frame and mounting interface",
                        "kind": "relation",
                        "unit_or_values": "compatible holder, stack, shaker or machine; interface dimensions in mm",
                        "why_it_matters": "Determines whether the sieve can be supported and sealed without bypass."
                    },
                    {
                        "name": "Contact materials",
                        "kind": "category",
                        "unit_or_values": "identified materials and coatings of mesh, frame, joints and seals",
                        "why_it_matters": "Supports assessment of corrosion, abrasion and contamination risks."
                    },
                    {
                        "name": "Feed suitability",
                        "kind": "relation",
                        "unit_or_values": "intended feed linked to particle shape, size range, moisture, cohesion and chemical compatibility",
                        "why_it_matters": "Passage depends on feed behaviour as well as nominal opening dimensions."
                    },
                    {
                        "name": "Operating arrangement",
                        "kind": "category",
                        "unit_or_values": "dry | wet; manual | gravity-fed | externally vibrated | externally shaken | other specified motion",
                        "why_it_matters": "Identifies the conditions and external equipment needed for separation."
                    },
                    {
                        "name": "Permitted loading",
                        "kind": "measurement",
                        "unit_or_values": "g or kg per batch, or kg/h for continuous service, under stated conditions",
                        "why_it_matters": "Excess loading can obstruct openings and reduce separation quality; limits require application-specific evidence."
                    },
                    {
                        "name": "Working-surface condition",
                        "kind": "state",
                        "unit_or_values": "intact | blinded | worn | torn | distorted | loose | unassessed",
                        "why_it_matters": "Defects can prevent passage, admit oversized material or release fragments."
                    },
                    {
                        "name": "Separation outcome",
                        "kind": "measurement",
                        "unit_or_values": "retained and passing mass in g or kg, or mass fractions in %, with operating conditions",
                        "why_it_matters": "Records actual performance without treating nominal aperture as an exact particle-size cutoff."
                    },
                    {
                        "name": "Verification status",
                        "kind": "state",
                        "unit_or_values": "unverified | documented inspection | verified against identified requirements | failed | review due",
                        "why_it_matters": "Distinguishes a usable separator from a sieve supported for a particular measurement or regulated application."
                    }
                ],
                "affordances": [
                    "Select a sieve whose openings, contact materials and mounting suit a stated feed and separation duty.",
                    "Arrange compatible sieves in a stack with a receiver to collect successive fractions.",
                    "Apply a documented loading and motion or washing procedure, then collect retained and passing material.",
                    "Inspect openings, joints and seating for blockage, distortion, damage or bypass.",
                    "Clean and dry the sieve using a method compatible with its surface and intended use.",
                    "Remove a damaged or insufficiently verified sieve from an application that requires reliable separation."
                ]
            },
            "sources": [],
            "structure": {
                "bundles": [
                    {
                        "id": "separation-identity",
                        "name": "Separation identity",
                        "description": "Establishes the physical sense of sieve and the separation duty it serves.",
                        "rationale": "The name overlaps with neighbouring tools and does not by itself establish a measurement capability.",
                        "layers": [
                            {
                                "id": "physical-sieve-boundary",
                                "name": "Physical sieve boundary",
                                "description": "Identifies the separating surface and distinguishes it from the surrounding apparatus.",
                                "findings": [
                                    {
                                        "id": "apertured-separator",
                                        "name": "Apertured separator",
                                        "description": "Recognition requires a working surface that permits passage through openings while retaining a fraction of the feed.",
                                        "questions": [
                                            {
                                                "text": "Which surface performs separation, and what passes through or remains on it?",
                                                "kind": "definition",
                                                "id": "apertured-separator-q01"
                                            },
                                            {
                                                "text": "Does the named thing denote the sieve component, a complete screening machine, or a nonphysical sieve?",
                                                "kind": "boundary",
                                                "id": "apertured-separator-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "duty-and-neighbours",
                                "name": "Duty and neighbours",
                                "description": "Locates the sieve's intended role among classification, screening and straining uses.",
                                "findings": [
                                    {
                                        "id": "declared-separation-duty",
                                        "name": "Declared separation duty",
                                        "description": "The intended retained and passing fractions establish what successful use means.",
                                        "questions": [
                                            {
                                                "text": "Is the duty size classification, oversize removal, solids recovery or liquid drainage?",
                                                "kind": "definition",
                                                "id": "declared-separation-duty-q01"
                                            },
                                            {
                                                "text": "Which registry boundary governs overlap with screens, strainers, colanders and filters?",
                                                "kind": "boundary",
                                                "id": "declared-separation-duty-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "opening-and-construction",
                        "name": "Opening and construction",
                        "description": "Describes the geometry and physical construction that govern passage.",
                        "rationale": "Opening labels are insufficient without geometry, usable area and an intact support arrangement.",
                        "layers": [
                            {
                                "id": "passage-geometry",
                                "name": "Passage geometry",
                                "description": "Captures the dimensions and distribution of working openings.",
                                "findings": [
                                    {
                                        "id": "opening-specification",
                                        "name": "Opening specification",
                                        "description": "Opening shape, dimensions and variation define the geometric basis of separation.",
                                        "questions": [
                                            {
                                                "text": "What are the nominal opening dimensions and shape, expressed in µm or mm?",
                                                "kind": "measurement",
                                                "id": "opening-specification-q01"
                                            },
                                            {
                                                "text": "What document or measurement connects any mesh designation to those dimensions and tolerances?",
                                                "kind": "provenance",
                                                "id": "opening-specification-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "surface-support-and-seating",
                                "name": "Surface support and seating",
                                "description": "Captures the working surface, frame and interfaces that preserve the separation boundary.",
                                "findings": [
                                    {
                                        "id": "supported-sealed-surface",
                                        "name": "Supported and seated surface",
                                        "description": "Construction and seating must keep feed on the intended passage path without edge leakage.",
                                        "questions": [
                                            {
                                                "text": "What materials, joints and supports form the working surface and frame?",
                                                "kind": "definition",
                                                "id": "supported-sealed-surface-q01"
                                            },
                                            {
                                                "text": "How is the sieve seated or sealed so material cannot bypass its openings?",
                                                "kind": "action",
                                                "id": "supported-sealed-surface-q02"
                                            },
                                            {
                                                "text": "What usable sieving area and mounting dimensions are available?",
                                                "kind": "measurement",
                                                "id": "supported-sealed-surface-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "feed-and-operation",
                        "name": "Feed and operation",
                        "description": "Relates the sieve to the feed and operating conditions needed for useful separation.",
                        "rationale": "Aperture alone cannot predict separation when particles orient, agglomerate or obstruct the surface.",
                        "layers": [
                            {
                                "id": "feed-passage-behaviour",
                                "name": "Feed passage behaviour",
                                "description": "Identifies feed properties that change access to and passage through openings.",
                                "findings": [
                                    {
                                        "id": "particle-and-moisture-effects",
                                        "name": "Particle and moisture effects",
                                        "description": "Particle shape, moisture and cohesion must be considered when judging suitability.",
                                        "questions": [
                                            {
                                                "text": "What particle shapes, moisture conditions and agglomeration behaviour characterise the feed?",
                                                "kind": "measurement",
                                                "id": "particle-and-moisture-effects-q01"
                                            },
                                            {
                                                "text": "Could deformation, orientation or agglomeration make passage misleading for the intended classification?",
                                                "kind": "boundary",
                                                "id": "particle-and-moisture-effects-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "loading-and-motion",
                                "name": "Loading and motion",
                                "description": "Defines how material is presented to openings and moved across the surface.",
                                "findings": [
                                    {
                                        "id": "operating-procedure",
                                        "name": "Operating procedure",
                                        "description": "Loading, motion, duration and any washing conditions establish the context for the result.",
                                        "questions": [
                                            {
                                                "text": "What batch mass or feed rate is permitted for this material and usable surface area?",
                                                "kind": "measurement",
                                                "id": "operating-procedure-q01"
                                            },
                                            {
                                                "text": "What motion, duration or endpoint and wetting conditions should the agent apply?",
                                                "kind": "action",
                                                "id": "operating-procedure-q02"
                                            },
                                            {
                                                "text": "Which external shaker, water supply or other equipment is required by that procedure?",
                                                "kind": "boundary",
                                                "id": "operating-procedure-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "fractions-and-verification",
                        "name": "Fractions and verification",
                        "description": "Connects collected fractions to operating records and evidence of opening conformity.",
                        "rationale": "A sieve used for measurement needs traceable conditions and verification beyond a nominal size label.",
                        "layers": [
                            {
                                "id": "fraction-recovery",
                                "name": "Fraction recovery",
                                "description": "Tracks retained, passing and unrecovered material.",
                                "findings": [
                                    {
                                        "id": "fraction-accounting",
                                        "name": "Fraction accounting",
                                        "description": "Collected fractions should be identifiable and losses visible before results are interpreted.",
                                        "questions": [
                                            {
                                                "text": "What masses or proportions passed, remained and were not recovered?",
                                                "kind": "measurement",
                                                "id": "fraction-accounting-q01"
                                            },
                                            {
                                                "text": "How will fractions be collected and labelled to prevent mixing between stack levels or runs?",
                                                "kind": "action",
                                                "id": "fraction-accounting-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "test-sieve-evidence",
                                "name": "Test sieve evidence",
                                "description": "Identifies the requirements and records supporting a claimed measurement role.",
                                "findings": [
                                    {
                                        "id": "opening-conformity-evidence",
                                        "name": "Opening conformity evidence",
                                        "description": "Claims of test suitability require identified requirements and evidence applicable to the sieve.",
                                        "questions": [
                                            {
                                                "text": "Which standard, edition and issuing body govern this sieve's claimed test application?",
                                                "kind": "provenance",
                                                "id": "opening-conformity-evidence-q01"
                                            },
                                            {
                                                "text": "What inspection or calibration record supports opening conformity, and what is its scope?",
                                                "kind": "provenance",
                                                "id": "opening-conformity-evidence-q02"
                                            },
                                            {
                                                "text": "What result or condition requires reverification or exclusion from the test?",
                                                "kind": "action",
                                                "id": "opening-conformity-evidence-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "integrity-cleaning-and-exposure",
                        "name": "Integrity, cleaning and exposure",
                        "description": "Addresses degradation, carryover and hazards arising at the sieve and its interfaces.",
                        "rationale": "Blockage and damage directly alter separation, while cleaning and handling can introduce additional defects or exposure.",
                        "layers": [
                            {
                                "id": "separation-surface-degradation",
                                "name": "Separation surface degradation",
                                "description": "Distinguishes blocked passage from enlarged openings, tears and failed joints.",
                                "findings": [
                                    {
                                        "id": "defect-response",
                                        "name": "Defect response",
                                        "description": "Condition assessment must identify how a defect changes retention, passage or bypass.",
                                        "questions": [
                                            {
                                                "text": "Are openings blocked, enlarged or distorted, or are the surface and edge joints damaged?",
                                                "kind": "measurement",
                                                "id": "defect-response-q01"
                                            },
                                            {
                                                "text": "Which observed defects permit cleaning, require replacement or invalidate a previous separation?",
                                                "kind": "action",
                                                "id": "defect-response-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "cleaning-and-use-compatibility",
                                "name": "Cleaning and use compatibility",
                                "description": "Determines how the sieve can be cleaned and handled for its intended material and mounting.",
                                "findings": [
                                    {
                                        "id": "compatible-cleaning-and-handling",
                                        "name": "Compatible cleaning and handling",
                                        "description": "Cleaning must control retained residue without damaging openings, and operation must account for feed and mounting hazards.",
                                        "questions": [
                                            {
                                                "text": "Which cleaning and drying methods remove this residue without deforming openings or attacking contact materials?",
                                                "kind": "action",
                                                "id": "compatible-cleaning-and-handling-q01"
                                            },
                                            {
                                                "text": "What evidence establishes contact-material suitability for the intended food, chemical or other feed?",
                                                "kind": "provenance",
                                                "id": "compatible-cleaning-and-handling-q02"
                                            },
                                            {
                                                "text": "What controls are needed for dust, sharp wire, hazardous residue or attachment to moving equipment?",
                                                "kind": "action",
                                                "id": "compatible-cleaning-and-handling-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "evidence-and-external-alignment",
                        "name": "Evidence and external alignment",
                        "description": "What the world already says about this thing, gathered so the model can be checked against it.",
                        "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.",
                        "layers": [
                            {
                                "id": "reported-evidence",
                                "name": "Reported evidence",
                                "description": "Findings from the breadth pass, kept separate from the structural claims.",
                                "findings": [
                                    {
                                        "id": "evidence-confidence-notes",
                                        "name": "Check these first",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "The sense covered is the physical tool or device class, not a mathematical sieve, molecular-sieve material, product model or individual unit.",
                                            "Standards are recalled without consultation; current editions and application-specific requirements require verification.",
                                            "Dimensions describe common laboratory examples, not universal limits; passage also depends on particle shape, orientation, moisture and the sieving procedure."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-confidence-notes-q01",
                                                "text": "Which of these check these first hold for the sense of sieve this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-kinds",
                                        "name": "Kinds and varieties",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Woven-wire mesh sieve",
                                            "Perforated-plate sieve",
                                            "Electroformed precision sieve",
                                            "Handheld kitchen sieve",
                                            "Laboratory test sieve",
                                            "Powered vibrating sieve"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-kinds-q01",
                                                "text": "Which of these kinds and varieties hold for the sense of sieve this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-identifiers",
                                        "name": "Identifiers and schemes",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            {
                                                "scheme": "ASTM sieve designation",
                                                "value_or_pattern": "No. 200 corresponds to a nominal opening of 75 µm",
                                                "note": "Identifies an aperture designation for test sieves, not a unique device; sieve numbers should be interpreted within their stated standard."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-identifiers-q01",
                                                "text": "Which of these identifiers and schemes hold for the sense of sieve this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-standards-and-regulation",
                                        "name": "Standards and regulation",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "ISO 3310-1, International Organization for Standardization: technical requirements and testing for test sieves of metal wire cloth.",
                                            "ISO 3310-2, International Organization for Standardization: technical requirements and testing for test sieves of perforated metal plate.",
                                            "ASTM E11, ASTM International: specification for woven wire test sieve cloth and test sieves."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-standards-and-regulation-q01",
                                                "text": "Which of these standards and regulation hold for the sense of sieve this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-real-world-use",
                                        "name": "Real-world use",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Measuring particle-size distributions by weighing fractions retained on a stack of test sieves.",
                                            "Separating oversized particles from powders, granules, sand or aggregate.",
                                            "Sifting flour and breaking up loose agglomerates during food preparation.",
                                            "Draining liquids while retaining food solids.",
                                            "Recovering objects or specimens from soil and sediment."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-real-world-use-q01",
                                                "text": "Which of these real-world use hold for the sense of sieve this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-measurements",
                                        "name": "Typical measurements",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            {
                                                "quantity": "Laboratory test-sieve frame diameter",
                                                "typical_range": "Common nominal sizes include 200 and 203.2",
                                                "unit": "mm"
                                            },
                                            {
                                                "quantity": "Nominal aperture used in fine-aggregate grading",
                                                "typical_range": "Commonly 0.075-4.75 across a sieve series",
                                                "unit": "mm"
                                            },
                                            {
                                                "quantity": "Mass fraction retained on an individual sieve",
                                                "typical_range": "0-100",
                                                "unit": "%"
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-measurements-q01",
                                                "text": "Which of these typical measurements hold for the sense of sieve this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-failure-modes-and-hazards",
                                        "name": "Failure modes and hazards",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Blocked apertures reduce throughput and distort particle-size measurements.",
                                            "Torn mesh, enlarged openings or loose mesh-to-frame joints allow unintended passage.",
                                            "Overloading or insufficient agitation causes incomplete separation.",
                                            "Moisture, static electricity and particle agglomeration can bias separation results.",
                                            "Sieving can release inhalable dust; powered equipment can also introduce pinch points and vibration hazards."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-failure-modes-and-hazards-q01",
                                                "text": "Which of these failure modes and hazards hold for the sense of sieve this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-regional-variation",
                                        "name": "Regional variation",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "US laboratory practice commonly uses ASTM numbered sieve designations and inch-based frame sizes; ISO-based practice commonly specifies metric apertures and frame sizes."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-regional-variation-q01",
                                                "text": "Which of these regional variation hold for the sense of sieve this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-neighbours",
                                        "name": "Neighbouring kinds and how to tell them apart",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            {
                                                "name": "filter",
                                                "difference": "A sieve primarily separates by passage through defined openings; filters also include depth media and other capture mechanisms."
                                            },
                                            {
                                                "name": "strainer",
                                                "difference": "A strainer is generally described by its role in removing solids from a fluid or draining food; its construction can overlap with that of a sieve."
                                            },
                                            {
                                                "name": "screen",
                                                "difference": "Screen commonly denotes the separating surface or an industrial screening device; usage overlaps substantially with sieve."
                                            },
                                            {
                                                "name": "sieve shaker",
                                                "difference": "A sieve shaker supplies controlled motion to one or more sieves; the sieves provide the separating openings."
                                            },
                                            {
                                                "name": "molecular sieve",
                                                "difference": "A molecular sieve is a microporous material that separates molecules through selective adsorption and pore access, rather than a mesh or perforated tool."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-neighbours-q01",
                                                "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of sieve this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Does the registry intend sieve to include industrial screens, strainers and colanders, or are any of these independently owned neighbouring concepts?",
                "Which governing standards, issuing bodies and current editions apply to each intended test-sieve construction and use?",
                "What opening ranges, tolerances, loading limits and dimensions can be supported by sources for representative sieve classes?",
                "Which feed-dependent endpoints and recovery criteria distinguish adequate separation from under-sieving, particle breakage or material loss?",
                "What inspection, cleaning and replacement criteria are supported for each working-surface material and application?"
            ],
            "statistics": {
                "bundles": 6,
                "layers": 11,
                "findings": 19,
                "questions": 33
            }
        },
        "draft": {
            "generator": "vr.draft.v3",
            "status": "draft-generated",
            "researched": false,
            "archetype": "device, machine or tool",
            "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.",
            "facetsInferred": true,
            "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.",
            "purpose": "Give an agent a durable, checkable way to recognise a sieve, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an agent to recognise a physical sieve, assess its suitability and condition, and determine how it may separate or classify a material safely and reliably.",
            "characteristics": {
                "substance": "material",
                "origin": "manufactured",
                "agency": "inert",
                "mobility": "varies"
            },
            "whatYouCanDoWithIt": [
                "observed and measured"
            ],
            "distinguishingFeatures": [
                "Names folded into this entry, which a task may need to split apart again: sieve (mining), downpipe leaf trap, Freudenthal's sieve, Şadara, lint filter, chinois, zaru.",
                "7 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.",
                "Described in 82 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is."
            ],
            "openQuestionsForResearch": [
                "Which of the bundles below does a real task actually need, and which are ceremony?",
                "What does this thing have that the facets do not capture at all?",
                "Which neighbouring kind is most often confused with a sieve, and on what evidence are they told apart?"
            ],
            "whatItIsMadeOf": "matter you can touch",
            "physicalCharacter": [
                "Mobility varies between examples.",
                "Does nothing on its own; everything it does, something else did to it.",
                "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing."
            ],
            "whatCanBeDoneWithIt": [
                "observe it, measure it, record its state"
            ],
            "howItIsRecognised": [
                "Recognised by form, by the arrangement of its controls, and by markings - a plate, a model number, a certification mark. Form alone rarely separates two models that do very different things."
            ],
            "relatedModels": [
                {
                    "relation": "covers",
                    "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.",
                    "targets": [
                        "sieve (mining)",
                        "downpipe leaf trap",
                        "Freudenthal's sieve",
                        "Şadara",
                        "lint filter",
                        "chinois",
                        "zaru"
                    ]
                }
            ],
            "standing": "Described in 82 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 7 finer distinctions are held inside this entry as names rather than as separate models.",
            "structure": {
                "bundles": [
                    {
                        "id": "identity-and-classification",
                        "name": "Identity, naming and classification",
                        "description": "How an agent tells one sieve from another, and a sieve from things that resemble it.",
                        "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.",
                        "layers": [
                            {
                                "id": "naming-and-identifiers",
                                "name": "Names and identifiers",
                                "description": "The names this thing goes by and the identifiers that survive translation and time.",
                                "findings": [
                                    {
                                        "id": "preferred-name-and-aliases",
                                        "name": "Preferred name, aliases and local names",
                                        "description": "Which name to use, which names mean the same thing, and which merely sound similar.",
                                        "questions": [
                                            {
                                                "id": "preferred-name-and-aliases-q01",
                                                "text": "What identifies and describes the name of a sieve, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "preferred-name-and-aliases-q02",
                                                "text": "Who or what asserted this about the name of a sieve, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "preferred-name-and-aliases-q03",
                                                "text": "What may an agent decide or do once the name of a sieve is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    },
                                    {
                                        "id": "stable-identifiers",
                                        "name": "Stable identifiers and external keys",
                                        "description": "Identifiers that keep pointing at this kind of thing across systems and languages.",
                                        "questions": [
                                            {
                                                "id": "stable-identifiers-q01",
                                                "text": "What identifies and describes an identifier for a sieve, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "stable-identifiers-q02",
                                                "text": "Who or what asserted this about an identifier for a sieve, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "stable-identifiers-q03",
                                                "text": "What may an agent decide or do once an identifier for a sieve is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "classification-and-granularity",
                                "name": "Classification and granularity",
                                "description": "Where a sieve sits among kinds, and how finely a task needs to cut it.",
                                "findings": [
                                    {
                                        "id": "kind-and-parents",
                                        "name": "Kind, parents and neighbouring kinds",
                                        "description": "The classes this thing belongs to and the ones it is next to.",
                                        "questions": [
                                            {
                                                "id": "kind-and-parents-q01",
                                                "text": "What identifies and describes the kind of a sieve, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "kind-and-parents-q02",
                                                "text": "Who or what asserted this about the kind of a sieve, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "kind-and-parents-q03",
                                                "text": "What may an agent decide or do once the kind of a sieve is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    },
                                    {
                                        "id": "distinguishing-features",
                                        "name": "Distinguishing features",
                                        "description": "What separates a sieve from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a sieve, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "distinguishing-features-q02",
                                                "text": "Who or what asserted this about what distinguishes a sieve, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "distinguishing-features-q03",
                                                "text": "What may an agent decide or do once what distinguishes a sieve is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "form-and-composition",
                        "name": "Form, composition and condition",
                        "description": "What a sieve is made of, what shape and size it takes, and what state it is in.",
                        "rationale": "A physical thing can be measured, and a model that cannot record its measurements cannot support any decision that depends on them.",
                        "layers": [
                            {
                                "id": "form-and-dimensions",
                                "name": "Form and dimensions",
                                "description": "Shape, size, mass and the ranges these take across examples.",
                                "findings": [
                                    {
                                        "id": "measurable-dimensions",
                                        "name": "Measurable dimensions and their units",
                                        "description": "The quantities worth recording and the units they are recorded in.",
                                        "questions": [
                                            {
                                                "id": "measurable-dimensions-q01",
                                                "text": "What identifies and describes the dimensions of a sieve, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "measurable-dimensions-q02",
                                                "text": "Who or what asserted this about the dimensions of a sieve, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "measurable-dimensions-q03",
                                                "text": "What may an agent decide or do once the dimensions of a sieve is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "material-and-composition",
                                "name": "Material and composition",
                                "description": "Materials, parts and how they are put together.",
                                "findings": [
                                    {
                                        "id": "parts-and-materials",
                                        "name": "Parts and materials",
                                        "description": "What a sieve is built from and which parts are replaceable.",
                                        "questions": [
                                            {
                                                "id": "parts-and-materials-q01",
                                                "text": "What identifies and describes the composition of a sieve, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "parts-and-materials-q02",
                                                "text": "Who or what asserted this about the composition of a sieve, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "parts-and-materials-q03",
                                                "text": "What may an agent decide or do once the composition of a sieve is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "condition-and-integrity",
                                "name": "Condition and integrity",
                                "description": "Wear, damage, health and the difference between working and broken.",
                                "findings": [
                                    {
                                        "id": "condition-assessment",
                                        "name": "Condition, damage and health",
                                        "description": "How the condition of a sieve is judged and by whom.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "What identifies and describes the condition of a sieve, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "condition-assessment-q02",
                                                "text": "Who or what asserted this about the condition of a sieve, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "condition-assessment-q03",
                                                "text": "What may an agent decide or do once the condition of a sieve is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "place-and-movement",
                        "name": "Place and movement",
                        "description": "Where a sieve is, how it got there and where it may go (varies).",
                        "rationale": "A thing that can move needs its position recorded with a time, or every later claim about it is about a place it has left.",
                        "layers": [
                            {
                                "id": "location-and-placement",
                                "name": "Location and placement",
                                "description": "Position, containment and the reference frame the position is given in.",
                                "findings": [
                                    {
                                        "id": "position-and-frame",
                                        "name": "Position, container and reference frame",
                                        "description": "Where a sieve is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a sieve, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "position-and-frame-q02",
                                                "text": "Who or what asserted this about the location of a sieve, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "position-and-frame-q03",
                                                "text": "What may an agent decide or do once the location of a sieve is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "movement-and-transfer",
                                "name": "Movement and transfer",
                                "description": "How a sieve is carried, installed or relocated.",
                                "findings": [
                                    {
                                        "id": "movement-events",
                                        "name": "Movement events and constraints",
                                        "description": "What counts as a movement, what records it and what limits it.",
                                        "questions": [
                                            {
                                                "id": "movement-events-q01",
                                                "text": "What identifies and describes the movement of a sieve, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "movement-events-q02",
                                                "text": "Who or what asserted this about the movement of a sieve, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "movement-events-q03",
                                                "text": "What may an agent decide or do once the movement of a sieve is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "state-and-lifecycle",
                        "name": "State and lifecycle",
                        "description": "The states a sieve passes through and the events that move it between them.",
                        "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.",
                        "layers": [
                            {
                                "id": "lifecycle-stages",
                                "name": "Lifecycle stages",
                                "description": "From coming into existence to ceasing to be one of these.",
                                "findings": [
                                    {
                                        "id": "stages-and-transitions",
                                        "name": "Stages and transitions",
                                        "description": "The stages worth naming and what moves a sieve between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a sieve, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "stages-and-transitions-q02",
                                                "text": "Who or what asserted this about the lifecycle of a sieve, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "stages-and-transitions-q03",
                                                "text": "What may an agent decide or do once the lifecycle of a sieve is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "observations-and-status",
                                "name": "Observations and current status",
                                "description": "What is observed about a sieve, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a sieve is recorded so that it can be superseded rather than overwritten.",
                                        "questions": [
                                            {
                                                "id": "observation-record-q01",
                                                "text": "What identifies and describes an observation of a sieve, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "observation-record-q02",
                                                "text": "Who or what asserted this about an observation of a sieve, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "observation-record-q03",
                                                "text": "What may an agent decide or do once an observation of a sieve is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "function-and-principle",
                        "name": "Function and operating principle",
                        "description": "What sieve is for and how it achieves it.",
                        "rationale": "Two devices with the same name can work on different principles, and the principle is what predicts failure and constrains use.",
                        "layers": [
                            {
                                "id": "intended-function",
                                "name": "Intended function",
                                "description": "The job it does, and the jobs it is used for anyway.",
                                "findings": [
                                    {
                                        "id": "function-record",
                                        "name": "Function, principle and variants",
                                        "description": "What it does, how, and which variants do it differently.",
                                        "questions": [
                                            {
                                                "id": "function-record-q01",
                                                "text": "What function does sieve perform, on what operating principle, and which variants differ in that principle?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "function-record-q02",
                                                "text": "What use falls outside the intended function but happens in practice?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "capacity-and-rating",
                                "name": "Capacity and rating",
                                "description": "The numbers that say what it can do and where it stops.",
                                "findings": [
                                    {
                                        "id": "ratings",
                                        "name": "Ratings and their conditions",
                                        "description": "Rated capacity, power, throughput and the conditions each assumes.",
                                        "questions": [
                                            {
                                                "id": "ratings-q01",
                                                "text": "What ratings characterise sieve, in what units, and under what stated conditions?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "ratings-q02",
                                                "text": "What happens beyond the rating - degradation, refusal, damage - and how is that detected?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "operation-and-state",
                        "name": "Operation, controls and state",
                        "description": "How sieve is operated and what state it is in right now.",
                        "rationale": "An agent acting on a device needs its current state and the controls that change it, not just its specification.",
                        "layers": [
                            {
                                "id": "controls-and-modes",
                                "name": "Controls and modes",
                                "description": "What can be set, what that changes, and what is interlocked.",
                                "findings": [
                                    {
                                        "id": "control-surface",
                                        "name": "Control surface and interlocks",
                                        "description": "The settings available and the conditions that block them.",
                                        "questions": [
                                            {
                                                "id": "control-surface-q01",
                                                "text": "What controls and modes does sieve have, and what does each change?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "control-surface-q02",
                                                "text": "Which actions are interlocked or forbidden in which state, and what must be true before acting?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "condition-and-maintenance",
                                "name": "Condition and maintenance",
                                "description": "Wear, service intervals, consumables and the line between working and broken.",
                                "findings": [
                                    {
                                        "id": "service-record",
                                        "name": "Condition, service and consumables",
                                        "description": "What is consumed, what is serviced, and how condition is judged.",
                                        "questions": [
                                            {
                                                "id": "service-record-q01",
                                                "text": "What consumables and service does sieve need, at what interval, and on whose authority?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "service-record-q02",
                                                "text": "What evidence separates a unit that is working from one that is out of service?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "kind-model-unit",
                        "name": "Kind, model and unit",
                        "description": "Whether a claim about sieve is about the kind, a product line, or one physical unit.",
                        "rationale": "This is the boundary most often got wrong for made things, and getting it wrong mixes a catalogue entry with the machine in the yard.",
                        "layers": [
                            {
                                "id": "level-of-reference",
                                "name": "Level of reference",
                                "description": "The three levels and what belongs at each.",
                                "findings": [
                                    {
                                        "id": "level-rules",
                                        "name": "What belongs to kind, model and unit",
                                        "description": "Which properties are shared by all of them and which are not.",
                                        "questions": [
                                            {
                                                "id": "level-rules-q01",
                                                "text": "Which facts about sieve hold for every one of them, which for a model, and which only for one unit?",
                                                "kind": "boundary"
                                            },
                                            {
                                                "id": "level-rules-q02",
                                                "text": "What identifies an individual unit, and what should an agent do when it has only the kind?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "standards-and-conformity",
                                "name": "Standards and conformity",
                                "description": "The standards a working example must meet and who attests it.",
                                "findings": [
                                    {
                                        "id": "conformity",
                                        "name": "Standards, marks and attestation",
                                        "description": "Which standard applies, who certifies, and what the mark means.",
                                        "questions": [
                                            {
                                                "id": "conformity-q01",
                                                "text": "Which standards govern sieve, issued by whom, and what does conformity actually assert?",
                                                "kind": "provenance"
                                            },
                                            {
                                                "id": "conformity-q02",
                                                "text": "What may an agent conclude from a certification mark, and what may it not?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "provenance-and-evidence",
                        "name": "Provenance, evidence and time",
                        "description": "Where every claim about a sieve came from and when it held.",
                        "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.",
                        "layers": [
                            {
                                "id": "source-and-authority",
                                "name": "Source and authority",
                                "description": "Who said it, on what evidence, and how strongly.",
                                "findings": [
                                    {
                                        "id": "claim-provenance",
                                        "name": "Claim provenance and confidence",
                                        "description": "The authority behind each claim about a sieve and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a sieve, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "claim-provenance-q02",
                                                "text": "Who or what asserted this about a claim about a sieve, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "claim-provenance-q03",
                                                "text": "What may an agent decide or do once a claim about a sieve is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "time-and-versions",
                                "name": "Time, versions and supersession",
                                "description": "When a claim was true, when it was learnt, and what replaced it.",
                                "findings": [
                                    {
                                        "id": "validity-and-supersession",
                                        "name": "Validity period and supersession",
                                        "description": "How an old claim about a sieve is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a sieve, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "validity-and-supersession-q02",
                                                "text": "Who or what asserted this about the validity of a claim about a sieve, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "validity-and-supersession-q03",
                                                "text": "What may an agent decide or do once the validity of a claim about a sieve is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "statistics": {
                "bundles": 8,
                "layers": 17,
                "findings": 19,
                "questions": 51
            }
        }
    }
}