source has_evidence_line has_evidence_item has_evidence_from_source true Note that this may not qualify as a proper shortcut (i.e. it may not be valid to define using a property chain) for the same reason has_supporting reference is not defined as a property chain called has_evidence_item_described_by. This is a shortcut relation to be used when publications are referenced as providing support for an assertion, but it is not clear how many evidence lines are described across these publications. In such cases, discrete evidence lines cannot be created, and the has_evidence_from_source relation is used to directly link the assertion to publications providing some form of evidence information. A relation used to link an assertion or proposition to a source where evidence for it was found (i.e. a document, document part, database, etc) cito:cites_as_evidence is_described_by source information information content entity proposition assertion