Question: Which military unit garrison is Arlington County, Virginia and The Pentagon?
SPARQL query: SELECT DISTINCT ?uri WHERE {?uri <http://dbpedia.org/ontology/garrison> <http://dbpedia.org/resource/Arlington_County,_Virginia> . ?uri <http://dbpedia.org/property/garrison> <http://dbpedia.org/resource/The_Pentagon>  . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/MilitaryUnit>}
Answer: The military units garrisoned in Arlington County, Virginia and The Pentagon are [United States Navy, United States Army Air Forces].