SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/country> <http://dbpedia.org/resource/United_States> . ?x <http://dbpedia.org/property/discipline> ?uri . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/AcademicJournal>}
Which fields are covered by academic journals in the US?
SELECT DISTINCT ?e WHERE { ?o property:country resource:United_States . ?o property:discipline ?e . ?o rdf:type ontology:Academic_Journal }
answer
The fields of the academic journals in the United States are [answer].
The topic of scientific journals in the United States is [answer].