Please choose the correct ending to complete the given sentence: Disc dog: A man demonstrates how to train a dog to catch a frisbee inside of a gym room where the room is lined with frisbees. a man

Ending1: spins a frisbee to catch the frisbees and the dog runs after them. Ending2: and a dog are outside gathered on a large green field while frisbees are shown on a table in front of them. Ending3: talks to a camera inside of a room while holding many white frisbees in his hand. Ending4: runs, throws, and catches a frisbee from under the dog in the gym.

Answer format: ending1/ending2/ending3/ending4