Question: What is the military conflict whose commanders are John McEwen and Phm Vn ng?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE { ?uri onto:commander <http://dbpedia.org/resource/John_McEwen> . ?uri onto:commander <http://dbpedia.org/resource/Phạm_Văn_Đồng> . ?uri rdf:type onto:MilitaryConflict}