story: Libby loves to go swimming at the beach. As she gets ready to go, she feels like she is forgetting Something. She decides to leave anyway, and drives to the beach. After swimming for about an hour, she goes to find her towel. Her towel is nowhere to be found, and now she knows what she forgot!
 selected sentence: Her towel is nowhere to be found, and now she knows what she forgot!
Libby reaches for a towel after swimming >Causes/Enables> Libby's realizes she forgot a towel