Please choose the correct ending to complete the given sentence: Powerbocking: There's a person walking on stilts on a sidewalk where several cars are parked. He is demonstrating how to walk on stilts. he

Ending1: is using a walking stick to move back and forth on the sidewalk near a curb and railings. Ending2: is joined by two other men who also join him in the tutorial. Ending3: stops and takes a break. Ending4: demonstrates the trick using a real stilt.

Answer format: ending1/ending2/ending3/ending4