Question: Which sucessor of George Madison is the sucessor of levi Lincoln, Sr. ?
SPARQL query:
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
 SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/George_Madison> onto:relation ?uri. <http://dbpedia.org/resource/Levi_Lincoln,_Sr.> prop:successor ?uri}