Question: How many soccer manager have been in the Spain nation football team?
SPARQL:
SELECT DISTINCT COUNT(?uri) WHERE {?uri <http://dbpedia.org/property/nationalteam> <http://dbpedia.org/resource/Spain_national_football_team>  . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/SoccerManager>}