What is <solved by> of <Grigori Perelman> ?
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What did Grigori Perelman solve?
SELECT DISTINCT ?i WHERE { ?i property:solved_by resource:Grigori_Perelman }
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/P1136> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q117346>. }
select distinct ?answer where { ?answer wdt:P1136 wd:Q117346}
geometrization conjecture