what is the total number of coach where captain is grant welsh and win/loss is 5-15
CREATE TABLE "honour_board" (
  "season" real,
  "position" real,
  "win_loss" text,
  "coach" text,
  "captain" text,
  "dudley_tuckey_medal" text,
  "leading_goalkicker" text
);
SELECT COUNT("coach") FROM "honour_board" WHERE "captain"='Grant Welsh' AND "win_loss"='5-15';