what is the competition name when the age group is 17 or younger for athletics?
CREATE TABLE "women" (
  "sport" text,
  "competition_name" text,
  "competing_entities" text,
  "age_groups" text,
  "held_every" text
);
SELECT "competition_name" FROM "women" WHERE "age_groups"='17 or younger' AND "sport"='athletics';