SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/John_Tyler,_Sr.> <http://dbpedia.org/ontology/child> ?uri }
Who is the child of John Tyler, Sr.?
SELECT DISTINCT ?l WHERE { resource:John_Tyler,_Sr. property:child ?l }
John Tyler
John Tyler, Sr. child is [John Tyler] .
[John Tyler] is the child of John Tyler Sr.