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