What is <topic's main category> of <pottery> ?
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Which is the topic's main category for pottery?
SELECT DISTINCT ?t WHERE { ?t property:topic's_main_category resource:pottery }
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/P910> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q11642>. }
select distinct ?answer where { ?answer wdt:P910 wd:Q11642}