Please choose the correct ending to complete the given sentence: Cleaning windows: A man is wearing a yellow vest. He is standing in front of a building cleaning a window. a person

Ending1: is seen looking out one of the windows. Ending2: is painting the window gray in various shades of gray. Ending3: is holding the back of a man's head. Ending4: picks up a bucket and opens the top.

Answer format: ending1/ending2/ending3/ending4