An Object which is aggregated as part of this Aggregation, but which is not considered a component part.

This property is intended for things like licensing agreements or cover art which are considered part of an Aggregation from the perspective of resource aggregation, but not from the perspective of conceptual composition. Related objects are aggregated in and consequently part of the things they are related to, but as something other than a compositional component. For more general kinds of relation, use .