Please choose the correct ending to complete the given sentence: Sumo: Two sumo wrestlers are shown in a ring as spectators and a referee watch. the wrestlers

Ending1: enter to a ring with one bumping into another to break their fall. Ending2: crouch down and run into each other. Ending3: are engaged in a fight and the referee starts the fight. Ending4: give a one sided fight in front of the spectators and a judge.

Answer format: ending1/ending2/ending3/ending4