Please choose the correct ending to complete the given sentence: Walking the dog: Two dogs are walking on the sidewalk attached by a rope. two people

Ending1: are playing an indoor tennis match. Ending2: are going covered in snow on a parking lot near the bodies of water. Ending3: are walking on the sidewalk next to them. Ending4: are walking across the street walking on the leash of a dog.

Answer format: ending1/ending2/ending3/ending4