Question: List common systems are developed by of the Google Videos and written by of the Google Web Toolkit ?
SPARQL query:
PREFIX res: <http://dbpedia.org/resource/>
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
 SELECT DISTINCT ?uri WHERE { res:Google_Videos prop:developer ?uri. res:Google_Web_Toolkit onto:author ?uri}