Question: What company involved in the development of Sherlock did Arthur Levinson work for?
SPARQL:
 SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Arthur_D._Levinson> <http://dbpedia.org/ontology/occupation> ?uri. <http://dbpedia.org/resource/Sherlock_(software)> <http://dbpedia.org/ontology/developer> ?uri}