What is the Jump 2 of the person that has a Jump 3 of 7.77?
CREATE TABLE "final_round" (
  "athlete_name" text,
  "jump_1" text,
  "jump_2" text,
  "jump_3" text,
  "best_jump" text
);
SELECT "jump_2" FROM "final_round" WHERE "jump_3"='7.77';