Question: How many people have headed organizations headquartered at Niederkirchnerstrae?
SPARQL query: SELECT DISTINCT COUNT(?uri) WHERE { ?x <http://dbpedia.org/ontology/headquarter> <http://dbpedia.org/resource/Niederkirchnerstraße> . ?x <http://dbpedia.org/ontology/leader> ?uri  . }
Answer: There are [27] leaders of the organizations headquartered in Niederkirchnerstrae.