what is the military unit whose command structures are 56th division and 56th division ?
SELECT DISTINCT var_uri where brack_open var_uri dbo_commandStructure dbr_56th_ attr_open London attr_close _Division sep_dot var_uri dbo_commandStructure dbr_56th_ attr_open London attr_close _Division sep_dot var_uri a dbo_MilitaryUnit brack_close