Subobjects

• https://www.semantic-mediawiki.org/wiki/Examples/Queries/Simple_subobject_query
• https://www.semantic-mediawiki.org/wiki/Help:Notes_on_subobjects
• https://www.semantic-mediawiki.org/wiki/Subobject
• https://www.semantic-mediawiki.org/wiki/Help:Type_Record/Record_vs._subobject