Does the {flexural strength} of the {polyoxymethylene} {equals} {91}
Is the flexural strength of polyoxymethylene  equal to 91?
ASK WHERE { wd:Q146139 wdt:P5677 ?obj filter(?obj = 91) } 
ASK { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q146139> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P5677>. ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj. filter(?obj = 91) }
Is the flexing strength of polyoxymethylene exactly to 91?