Question: Under which presidents have politicians from the Continental army served?
SPARQL query: SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/branch> <http://dbpedia.org/resource/Continental_Army> . ?x <http://dbpedia.org/property/president> ?uri  . }
Answer: The presidents of the people whose branch is Continental Army are [Thomas Jefferson, George Washington, John Adams, James Madison, James Monroe, John Quincy Adams].