Question: From how many different places have people gone to the Harward Medical School?
SPARQL query: SELECT DISTINCT COUNT(?uri) WHERE { ?x <http://dbpedia.org/ontology/institution> <http://dbpedia.org/resource/Harvard_Medical_School> . ?x <http://dbpedia.org/ontology/birthPlace> ?uri  . }
Answer: There are [17] birthplaces of the people who studied in the Harvard Medical School.