what is the {item operated} for {Jeff Bezos} has {significant event} as {accident} ?
Which significant event in Jeff Bezo's career started as an accident?
What significant event in Jeff Bezos's career started as an accident?
SELECT ?o WHERE { ?b property:significant_event resource:accident . resource:Jeff_Bezos property:significant_event ?b . ?b property:item_operated ?o }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q312556> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P793> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q171558> .
?statement <http://www.wikidata.org/entity/P121> ?value. 
} 

SELECT ?value WHERE { wd:Q312556 p:P793 ?s . ?s ps:P793 wd:Q171558 . ?s pq:P121 ?value}