More natural way
From semantic-mediawiki.org
Fragment of a discussion from Help talk:Subobjects and queries
Yes, I meant creating a property for subobject to backreference the parent page, then querying ?MyParentPage.PropertyOfParent. That's SIO way and in many cases such property is more meaningful than the property pointing from the parent page to the subobject. The backreference property may be universal or specific to the subobject class.
