A conforming model must use only the defined relationship types and give each its stated sense: composition and aggregation for whole-part links, assignment for responsibility, performance, storage or execution, realization for an entity's part in creating or sustaining a more abstract one, serving for offering functionality, access for observing or acting on passive elements, influence on motivation elements, association for unstated links, triggering for temporal or causal links, flow for transfer, and specialization for a narrower kind. Where several relationships of one type meet, and-junctions and or-junctions must be available to combine them.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.