wasAddedTo_Coll(c2,c1) wasAddedTo_Key(c2,k1) wasAddedTo_Entity(c2,e1) wasAddedTo_Coll(c3,c2) wasAddedTo_Key(c3,k2) wasAddedTo_Entity(c3,e2) wasRemovedFrom_Coll(c4,c3) wasRemovedFrom_Key(c4,k1)