what is the military unit whose command structures are 1st division and 1st brigade ?
SELECT DISTINCT var_uri where brack_open var_uri dbo_commandStructure dbr_1st_Division_ attr_open Australia attr_close sep_dot var_uri dbo_commandStructure dbr_1st_Brigade_ attr_open Australia attr_close sep_dot var_uri a dbo_MilitaryUnit brack_close