Question: What is the common branch of military of Edward Joseph Schwartz  and John Tower ?
SPARQL:
 SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Edward_Joseph_Schwartz> <http://dbpedia.org/property/branch> ?uri. <http://dbpedia.org/resource/John_Tower> <http://dbpedia.org/ontology/militaryBranch> ?uri}