Reference link object, using a JSON pointer RFC 6901 (URI Fragment Identifier Representation), pointing to the entity .
role
role:string
Role of entity in the relationship. For example: 'CD20-positive diffuse large B-cell lymphoma' has the following entities with their roles in parenthesis: CD20 (GeneOrProtein), Positive (Expression), diffuse large B-cell lymphoma (Diagnosis).
Reference link object, using a JSON pointer RFC 6901 (URI Fragment Identifier Representation), pointing to the entity .