Question: How many people have parterned with the person choroegraphed by Catarina Lindgren in the past?
SPARQL:
SELECT DISTINCT COUNT(?uri) WHERE { ?x <http://dbpedia.org/ontology/formerChoreographer> <http://dbpedia.org/resource/Catarina_Lindgren> . ?x <http://dbpedia.org/ontology/formerPartner> ?uri  . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Person>}