query: PREFIX p: <http://www.wikidata.org/prop/>
  PREFIX v: <http://www.wikidata.org/prop/statement/>
  PREFIX pq: <http://www.wikidata.org/prop/qualifier/>
  
  SELECT ?cineplex ?film ?filmLabel (GROUP_CONCAT(DISTINCT(?country)) AS ?countries) (MIN(?release) AS ?release) (MIN(?grelease) AS ?grelease) WHERE {
    ?film wdt:P3077 ?cineplex .
    ?film p:P577 ?release_statement . ?release_statement psv:P577/wikibase:timePrecision "11"^^xsd:integer . ?release_statement v:P577 ?release .
    ?film p:P577 ?grelease_statement . ?grelease_statement psv:P577/wikibase:timePrecision "11"^^xsd:integer . ?grelease_statement v:P577 ?grelease . ?grelease_statement pq:P291 wd:Q183 .
    OPTIONAL{?film wdt:P495 ?country} .
    SERVICE wikibase:label { bd:serviceParam wikibase:language "de" }
  }
  GROUP BY ?cineplex ?film ?filmLabel
  HAVING(year(?grelease)>=1949 && year(?grelease)<=1999)
  ORDER BY ?filmLabel