Question: What is the military branch of the William French Smith which is also the branch of Pierre R. Graham ?
SPARQL query:
PREFIX res: <http://dbpedia.org/resource/>
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
 SELECT DISTINCT ?uri WHERE { res:William_French_Smith onto:militaryBranch ?uri. res:Pierre_R._Graham prop:branch ?uri}