sentence: A man rides a bike a short distance toward the camera and stops. sentence:   The man talks to the camera while stopped on his bike. sentence:   The man is shown something on his bike using a small tool. sentence:   The man demonstrates how the pedal and chains work. sentence:   The man is shown working on the hand brakes and cable of the bike. sentence:   The man is now kneeling near the bike as he talks to the camera. sentence:   The man rides away.