Question: List the software using C++ as programming language and licence is Software as a service?
SPARQL:
SELECT DISTINCT ?uri WHERE {?uri <http://dbpedia.org/property/programmingLanguage> <http://dbpedia.org/resource/C++> . ?uri <http://dbpedia.org/ontology/license> <http://dbpedia.org/resource/Software_as_a_service>  . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Software>}