Whose military units are VMF-218 and VMF-155?
SELECT DISTINCT ?uri WHERE { ?uri <http://dbpedia.org/ontology/militaryUnit> <http://dbpedia.org/resource/VMF-218> . ?uri <http://dbpedia.org/ontology/militaryUnit> <http://dbpedia.org/resource/VMF-155> . }
VMF-218 VMF-155