Question: How many different currencies are used in the places governed by the president of France?
SPARQL query:
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT COUNT(?uri) WHERE { ?x prop:leaderTitle <http://dbpedia.org/resource/President_of_France> . ?x onto:currency ?uri  . }