What is {public domain date} of {Metropolis} that is {applies to jurisdiction} is {United States of America} ?
The film "Metropolis" entered the American Public Domain in which year?
When did the film "Metropolis" go into the Public Domain in the United States?
SELECT ?q WHERE { resource:Metropolis property:public_domain_date ?d . ?d property:applies_to_jurisdiction resource:United_States_of_America . ?d property:public_domain_date ?q }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q151599> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P3893> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P1001> <http://wikidata.dbpedia.org/resource/Q30>
} 

SELECT ?obj WHERE { wd:Q151599 p:P3893 ?s . ?s ps:P3893 ?obj . ?s pq:P1001 wd:Q30 }