What is <NRHP reference number> of <Flatiron Building> ?
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What's the Flatiron Building's NRHP reference number?
SELECT DISTINCT ?r WHERE { resource:Flatiron_Building property:NRHP_reference_number ?r }
select distinct ?answer where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q220728> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P649> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?answer. }
select distinct ?answer where { wd:Q220728 wdt:P649 ?answer}
79001603