SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/role> <http://dbpedia.org/resource/Close_air_support> . ?uri <http://dbpedia.org/ontology/militaryUnit> ?x . }
Whose units are responsible for close air support?
SELECT DISTINCT ?d WHERE { ?p property:role resource:Close_air_support . ?d property:military_unit ?p . }
answer
The people whose military unit's role is close air support are [answer].
People whose troops are under close air support are [answer].