what is the military unit whose command structures are 6th brigade and 5th brigade ?
SELECT DISTINCT var_uri where brack_open var_uri dbo_commandStructure dbr_6th_Brigade_ attr_open Australia attr_close sep_dot var_uri dbo_commandStructure dbr_5th_Brigade_ attr_open Australia attr_close sep_dot var_uri a dbo_MilitaryUnit brack_close