Graph Backed
Structure
Fixture Observation Tower
Membership basis preserved below.
Evidence: apu:rel:collection-tower
COLLECTION / DEVELOPMENT FIXTURE
Fixture Water-Edge Places
A synthetic grouping used to prove that APU can preserve why each entity belongs to a collection instead of converting editorial curation into factual classification.
Synthetic development collection. Membership is fixture evidence only and must not be published.
Membership ledger
Graph Backed
Landscape Or Site
Fixture Tidal Garden
Membership basis preserved below.
Evidence: apu:rel:collection-garden
Curated
Place
Fixture Civic Square
Explicit synthetic editorial membership; not inferred from city scope or proximity.
Evidence: apu:source:apu001-fixture-spec
Membership semantics
| Mode | Meaning |
|---|---|
| Graph-backed | An explicit Graph assertion connects the entity to this collection. |
| Curated | An editor explicitly included the entity and cited a source for that act of curation. |
| Spatially derived | Allowed only from a declared Atlas hierarchy rule, never coordinate proximity. |
| Time-derived | Allowed only from a declared rule over explicit Time events, never lifecycle labels. |