What is <overrules> of <Plessy v. Ferguson> ?
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What is in the category of Plessy v. Ferguson?
SELECT DISTINCT ?f WHERE { ?f property:overrules resource:Plessy_v._Ferguson }
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/P4006> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q656660>. }
select distinct ?answer where { ?answer wdt:P4006 wd:Q656660}
Brown v. Board of Education