SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/predecessor> <http://dbpedia.org/resource/Bob_C._Riley> . ?uri <http://dbpedia.org/ontology/lieutenant> ?x . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/President>}
Name the president served by a lieutenant who succeeded Bob C Riley.
SELECT DISTINCT ?y WHERE { ?y property:lieutenant ?r . ?r property:predecessor resource:Bob_C._Riley . ?y rdf:type ontology:President }
Bill Clinton, Presidency of Bill Clinton
The presidents whose lieutenant's predecessor is Bob C. Riley are [Bill Clinton, Presidency of Bill Clinton].
Bob Riley's predecessor was [Bill Clinton, Bill Clinton's presidency].
The president whose lieutenant's predecessor is him are [Bill Clinton, Presidency of Bill Clinton].
The president he precedes is [Bill Clinton, Bill Clinton's presidency].