This property generalises the notions of copy of and similar to into a dynamic, asymmetric relationship, where the domain expresses the derivative, if such a direction can be established.
Otherwise, the relationship is symmetric. It is a short-cut of P15 was influenced by (influenced) in a creation or production, if such a reason for the similarity can be verified. Moreover it expresses similarity in cases that can be stated between two objects only, without historical knowledge about its reasons.