What is <side effect> of <combustion> ?
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What is the side effect of combustion?
SELECT DISTINCT ?m WHERE { ?m property:side_effect resource:combustion }
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/P1909> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q133235>. }
select distinct ?answer where { ?answer wdt:P1909 wd:Q133235}
Happily Ever After