Question: Which software has been developed by organizations founded in California?
SPARQL query:
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX onto: <http://dbpedia.org/ontology/>
PREFIX res: <http://dbpedia.org/resource/>
SELECT ?uri ?string
WHERE
{ 
	?company rdf:type onto:Organisation  .
        ?company onto:foundationPlace res:California .
        ?uri onto:developer ?company .
        ?uri rdf:type onto:Software .
	OPTIONAL {?uri rdfs:label ?string . FILTER (lang(?string) = 'en') }
}