What is the {periodical literature} for {mouthpiece} of {Air Canada}
What's Air Canada's news site?
What is the news site of Air Canada?
SELECT DISTINCT ?b WHERE { resource:Air_Canada property:house_publication ?b . ?b rdf:type ontology:periodical }
select distinct ?obj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q185339> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P2813> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj . ?obj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q1002697> } 
 select distinct ?obj where { wd:Q185339 wdt:P2813 ?obj . ?obj wdt:P31 wd:Q1002697 } 
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