History description 2014-03-26: Lock all vaue sets untouched since 2014-03-26 to trackingId 2014T1_2014_03_26
description:
A relationship that is based on mutual behavior of the two Entities as being related.
The basis of such relationship may be agreements (e.g., spouses, contract parties)
or they may be de facto behavior (e.g. friends) or may be an incidental involvement with each other (e.g.
parties over a dispute, siblings, children).