what is the {start time} for {Antonin Scalia} has {employer} as {University of Chicago Law School} ?
When was Antonin Scalia employed by the University of Chicago Law School?
SELECT ?value WHERE { wd:Q11156 p:P108 ?s . ?s ps:P108 wd:Q1036763 . ?s pq:P580 ?value}
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q11156> .
?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> <http://wikidata.dbpedia.org/resource/Q1036763> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

What year was Antonin Scalia employed by University of Chicago Law School?