Please choose the correct ending to complete the given sentence: Longboarding: Clips of skateboarders in different scenes. a skateboarder wearing a red helmet

Ending1: and a lady in a red shirt skateboards down a track down a hill. Ending2: enters a building. Ending3: is skating down hill on a public street. Ending4: overturns and falls.

Answer format: ending1/ending2/ending3/ending4