What is the lowest PI GP when the Reg GP is 1, Murray Bannerman is the Player, and the Pick # is under 58?
CREATE TABLE "list_of_vancouver_canucks_draft_picks" (
  "rd_num" real,
  "pick_num" real,
  "player" text,
  "team_league" text,
  "reg_gp" real,
  "pl_gp" real
);
SELECT MIN("pl_gp") FROM "list_of_vancouver_canucks_draft_picks" WHERE "reg_gp"=1 AND "player"='murray bannerman' AND "pick_num"<58;