Question: Name books with publisher as Francisco de Robles and writer as Miguel de Cervantes ?
SPARQL:
SELECT DISTINCT ?uri WHERE {?uri <http://dbpedia.org/ontology/publisher> <http://dbpedia.org/resource/Francisco_de_Robles> . ?uri <http://dbpedia.org/property/author> <http://dbpedia.org/resource/Miguel_de_Cervantes>  . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Book>}