bearer of at all times
has role at all times
hasRoleAt
Alan Ruttenberg: This is a binary version of a ternary time-indexed, instance-level, relation. The BFO reading of the binary relation 'has role at all times@en' is: forall(t) exists_at(x,t) -> exists_at(y,t) and 'has role@en(x,y,t)'.
has-r_at
(iff (hasRoleAt a b t) (roleOfAt b a t)) // axiom label in BFO2 CLIF: [068-001]
a has_role b at t =Def. b role_of a at t. (axiom label in BFO2 Reference: [068-001])
role