What is the {chemical compound} for {polymer of} of {polypropylene}
What is the chemical structure of polypropylene?
What is the chemical structure of polypropylene?
SELECT DISTINCT ?n WHERE { ?n rdf:type ontology:chemical_compound . resource:polypropylene property:polymer_of ?n }
select distinct ?obj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q146174> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P4600> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj . ?obj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q11173> } 
 select distinct ?obj where { wd:Q146174 wdt:P4600 ?obj . ?obj wdt:P31 wd:Q11173 } 
propylene