story: Ben and his friends were sitting on top of a hill. Ben sat down on his skateboard and sped down the hill. When he reached the bottom his friends said they wanted to try too. His friend began to copy Ben but slipped off halfway down the hill. He hurt his arm badly and Ben and his friends called an ambulance.
 selected sentence: Ben sat down on his skateboard and sped down the hill.
Ben speeds down the hill >Causes/Enables> Ben reaches the bottom of the hill