sentence: A middle aged man is shoveling snow on a sidewalk while a medium sized brown dog chases the shovel. sentence:  The man throws the snow and turns the other way to repeat the shoveling while the dog continues to chase the shovel. sentence:  At the end of the sidewalk near a driveway a young woman in a black snowsuit lying on her stomach sees the dog chasing the shovel and laughs. sentence:  The man now turns and runs down the sidewalk shoveling the snow again and the dog runs along with him. sentence:  The man does not turn around and shovel the sidewalk again, but carries the snow in the shovel and walks away from the dog. sentence:  The dog trails behind as if tired.