sentence: A dog rides on a boat with his owners. sentence:  A crab is seen crawling on the bottom of a lake. sentence:  People water ski behind a boat on a calm lake. sentence:  The person lets go of the tug rope and glides towards the shore of the lake. sentence:  The group prepare a chair on a sled with a rope on shore. sentence:  A man is pulled on a sled from the shore then on the lake. sentence:  The group removes the sled from the water and lifts it to drain the water.