Question: Which employer of Manu Cornet has alsoe written Google.by ?
SPARQL:
 SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Manu_Cornet> <http://dbpedia.org/property/employer> ?uri. <http://dbpedia.org/resource/Google.by> <http://dbpedia.org/ontology/author> ?uri}