What is the {profession} for {used by} of {brick}
Which work employments a brick?
Which job uses a brick?
SELECT DISTINCT ?j WHERE { ?j rdf:type ontology:profession . resource:brick property:used_by ?j }
select distinct ?obj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q40089> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1535> . ?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/Q28640> } 
 select distinct ?obj where { wd:Q40089 wdt:P1535 ?obj . ?obj wdt:P31 wd:Q28640 } 
construction worker