Issue 84: Consistency of P60 is member of and P107 had member
Consistency of P60 and P107 need to be looked at. Should possibly point to group rather than legal body and should use the former-current and current construct used elsewhere.
Delete P60 as redundant.
P107 to be renamed: P107 has current or former member (is current or
former member of)
P107 makes Persons the atomic elements of Groups. This is sufficient.
Temporal validity of membership seems to be out of practical scope, if
not proven otherwise.
Proposal accepted, Copenhagen 2/7/2002.