Question: Which president was served by someone whose lieutenant is Lewis Stuyvesant Chanler?
SPARQL query: SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/lieutenant> <http://dbpedia.org/resource/Lewis_Stuyvesant_Chanler> . ?x <http://dbpedia.org/ontology/president> ?uri  . }
Answer: The presidents of the person whose lieutenant is Lewis Stuyvesant Chanler are [Calvin Coolidge, Warren G. Harding].