What is {employer} of {William Henry Bragg} and {start time}
When did boss of William Henry Bragg and begin time?
When did employer of William Henry Bragg and start time?
SELECT ?w ?h WHERE { ?r property:start_time ?w . . resource:William_Henry_Bragg property:employer ?r . ?r property:employer ?h }
select distinct ?dataprop1 ?obj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q133747> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P108> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj . ?statement <http://www.wikidata.org/entity/P580> ?dataprop1 . } 
SELECT ?value1 ?obj WHERE { wd:Q133747 p:P108 ?s . ?s ps:P108 ?obj . ?s pq:P580 ?value1 . }