query: select distinct ?item where { {?item wdt:P170 ?crea .} UNION {?item wdt:P50 ?crea .} ?crea wdt:P21 wd:Q6581072 . ?crea wdt:P570 ?time0 . FILTER ( ?time0 >= "1945-01-01T00:00:00Z"^^xsd:dateTime && ?time0 <= "1945-12-31T00:00:00Z"^^xsd:dateTime ) ?item wdt:P31/wdt:P279* wd:Q4502142}