Question: Who had  Joe Purcell and Winston Bryant as lieutenants ?
SPARQL:
SELECT DISTINCT ?uri WHERE { ?uri <http://dbpedia.org/ontology/lieutenant> <http://dbpedia.org/resource/Joe_Purcell> . ?uri <http://dbpedia.org/ontology/lieutenant> <http://dbpedia.org/resource/Winston_Bryant> . }