Question: Count everyone who was in the military unit which is structured like the Marine Aircraft Group 13 ?
SPARQL query: SELECT DISTINCT COUNT(?uri) WHERE { ?x <http://dbpedia.org/property/commandStructure> <http://dbpedia.org/resource/Marine_Aircraft_Group_13> . ?uri <http://dbpedia.org/ontology/militaryUnit> ?x  . }
Answer: There are [10] people whose military unit's command structure is Marine Aircraft Group 13.