When in 2009 season has a Group of group b, and cancha del mystic with a Club of el tecal?
CREATE TABLE "2010_11_teams" (
  "club" text,
  "city" text,
  "stadium" text,
  "2009_season" text,
  "group" text
);
SELECT "2009_season" FROM "2010_11_teams" WHERE "group"='group b' AND "stadium"='cancha del mystic' AND "club"='el tecal';