ASK WHERE { <http://dbpedia.org/resource/KOMC_(AM)> <http://dbpedia.org/ontology/sisterStation> <http://dbpedia.org/resource/KOMC-FM> }
Is KOMC-FM the sister station of KOMC (AM)?
ASK WHERE { resource:K_O_M_C_(_A_M) property:sister_station resource:K_O_M_C-_F_M }
Yes
[Yes], KOMC-FM is the sister station of KOMC (AM).
[Yes], KOMC-FM is a subsidiary of KOMC (AM).
[Yes], the organisation-FM is  the sister station of the organisation (AM).
[Yes], Organization FM is a subsidiary station of the organization (AM).