Object property agent context

role notation

https://opda.org.uk/pdtf/roleNotationTurtle ↓

Relates a role-bearer to a coded notation naming the transactional role it bears (a member of opda:RoleScheme — Seller, Buyer, Proprietor, Conveyancer, etc.) — the notation surface exposing the role for editor and SPARQL ergonomics alongside the canonical class-membership encoding.

Notation value naming the transactional role borne by a Seller / Buyer / Proprietor / Conveyancer / etc. Constrained by per-overlay profile shapes via SHACL `sh:in` over the SKOS RoleScheme members. Per ODR-0006 §Q2 the role-bearing pattern is encoded by `opda:Seller` / `opda:Buyer` / `opda:Proprietor` sub-classes of `opda:RoleMixin`; this predicate exposes the notation for DASH editor ergonomics and SPARQL convenience. Renamed from opda:role (ADR-0044) to avoid the case-clash with the opda:Role class.