Question: List all crafts of the people whose one of the profession is Kingdom of Naples ?
SPARQL:
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/ontology/occupation> <http://dbpedia.org/resource/Kingdom_of_Naples> . ?x <http://dbpedia.org/ontology/occupation> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Person>}