query: SELECT ?subject ?subjectLabel ?wdp ?wdpLabel ?object ?objectLabel WHERE {
    { 
      SELECT ?subject ?wdp ?object WHERE {
        hint:Query hint:queryEngineChunkHandler "Managed" .
        hint:Query hint:optimizer "Runtime" .
        ?constraint pq:P2316 wd:Q21502408 . # mandatory constraint
        ?statement wikibase:hasViolationForConstraint ?constraint.
        ?subject ?p ?statement .
        ?subject wdt:P31 wd:Q5 . # instance of human
        ?statement ?ps ?object .
        ?wdp wikibase:statementProperty ?ps .
        ?wdp wikibase:claim ?p . 
      } LIMIT 10 
    }
    SERVICE wikibase:label {
      bd:serviceParam wikibase:language "en" . 
    }
  } 