What is the {suicide attack} for {immediate cause of} of {War on Terror}
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Which suicide attack instigated the War on Terror?
SELECT DISTINCT ?y WHERE { ?y property:immediate_cause_of resource:War_on_Terror . ?y rdf:type ontology:suicide_attack }
select distinct ?subj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?subj . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1536> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q185729> . ?subj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q217327> } 
 select distinct ?sbj where { ?sbj wdt:P1536 wd:Q185729 . ?sbj wdt:P31 wd:Q217327 } 
September 11 attacks