What is <dual to> of <pentachoron> ?
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Pentachoron is dual to what?
SELECT DISTINCT ?a WHERE { ?a property:dual_to resource:pentachoron }
select distinct ?answer where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject>  ?answer. ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1322> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q1634717>. }
select distinct ?answer where { ?answer wdt:P1322 wd:Q1634717}
pentachoron