a Property is a Feature/Attribute of a Topic
see * https://semantic-mediawiki.org/wiki/Help:Properties_and_types * https://semantic-mediawiki.org/wiki/Help:Special_properties * https://semantic-mediawiki.org/wiki/Help:List_of_datatypes
Property# QUERY6c97e4999b81db65350c1fcd678b73f2
Property# ae3bcafc71cd6026f8fcdbe393d261d9