Question: What is the total number of software whose programming language is C++ and operating system is Microsoft Windows?
SPARQL query:
PREFIX onto: <http://dbpedia.org/ontology/>
 SELECT DISTINCT COUNT(?uri) WHERE {?uri onto:programmingLanguage <http://dbpedia.org/resource/C++> . ?uri onto:operatingSystem <http://dbpedia.org/resource/Microsoft_Windows> }