What is {tributary} of {spans} of {Incheon Bridge} ?
What tributaries does Incheon Bridge go over?
What are the tributaries of the river which the Incheon Bridge spans?
SELECT ?h WHERE { resource:Incheon_Bridge property:crosses ?v . ?v property:tributary ?h }
SELECT ?answer WHERE { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q483949> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P177>. ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?X . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?X. ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P974> . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?answer . }
SELECT ?answer WHERE { wd:Q483949 wdt:P177 ?X . ?X wdt:P974 ?answer}
Yellow River Han River Geum River Yeongsan River Ch'ongch'on River Liao River Daliao River Shu River Yihe Yalu River