query: #title: Items that link to a Commons category
  # Complex constraint from [[Property talk:P910]]
  # These links should be moved to the category item
  SELECT ?item ?categoryitem ?commonscategory WHERE {
    ?item wdt:P910 ?categoryitem .
    ?commonscategory schema:about ?item .
    ?commonscategory schema:isPartOf <https://commons.wikimedia.org/> .
    FILTER REGEX(STR(?commonscategory), "https://commons.wikimedia.org/wiki/Category:") .
    } LIMIT 1000