Question: Which vice president of Warren G. Harsing is also the president of Evans Hughes ?
SPARQL:
 SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Warren_G._Harding> <http://dbpedia.org/ontology/vicePresident> ?uri. <http://dbpedia.org/resource/Charles_Evans_Hughes> <http://dbpedia.org/ontology/president> ?uri}