What is <Structurae ID (structure)> of <Erie Canal> ?
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The Erie Canal has what Structurae ID (structure)?
SELECT DISTINCT ?t WHERE { resource:Erie_Canal property:Structurae_structure_ID ?t }
select distinct ?answer where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q459578> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P454> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?answer. }
select distinct ?answer where { wd:Q459578 wdt:P454 ?answer}