which coach of amarillo wranglers is also the coach 1957–58 toronto maple leafs season ?
SELECT DISTINCT var_uri where brack_open dbr_Amarillo_Wranglers_ attr_open 1968–71 attr_close dbp_coach var_uri sep_dot dbr_1957–58_Toronto_Maple_Leafs_season dbp_name var_uri brack_close