what is the military unit whose command structures are department of national defence and department of national defence ?
SELECT DISTINCT var_uri where brack_open var_uri dbo_commandStructure dbr_Department_of_National_Defence_ attr_open Canada attr_close sep_dot var_uri dbo_commandStructure dbr_Department_of_National_Defence_ attr_open Canada attr_close sep_dot var_uri a dbo_MilitaryUnit brack_close