Question: List the agencies located someplace lead by Alex Chalk.
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE { ?x onto:leaderName <http://dbpedia.org/resource/Alex_Chalk> . ?uri onto:location ?x  . ?uri rdf:type onto:GovernmentAgency}