What is <IATA airport code> of <O'Hare International Airport> ?
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Which is the IATA airport code for O'Hare International Airport?
SELECT DISTINCT ?f WHERE { resource:O'Hare_International_Airport property:IATA_airport_code ?f }
select distinct ?answer where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q213717> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P238> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?answer. }
select distinct ?answer where { wd:Q213717 wdt:P238 ?answer}
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