Please choose the correct ending to complete the given sentence: Using uneven bars: A gymnast performs uneven bars routine while people watch. the judge

Ending1: walks across the street, where many spectators are watching. Ending2: supervises the routine of the gymnast. Ending3: directs the approach and turn of the routine. Ending4: calls a referees over.

Answer format: ending1/ending2/ending3/ending4