story: Jimmy went for a swim at the water park. He climbed on top of the tower where there are slides. Since he left his wallet in his pocket by accident, it got lost. When he saw it, it was headed towards a large crowd of people. He wasn't able to go through all of the people.
 selected sentence: When he saw it, it was headed towards a large crowd of people.
Jimmy sees the wallet >Causes/Enables> Jimmy tries to get the wallet