Question: What currencies are circulated in the countries where people speak French?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE { ?x onto:officialLanguage <http://dbpedia.org/resource/French_language> . ?x onto:currency ?uri . ?x rdf:type onto:Location}