Given the task definition and input, reply with output. In this task, you will be given a short story. One sentence from the story is chosen. Consider the events that happen before that sentence, or are likely to have happened before it. Does any of them directly cause it, or simply make it possible? You should write your answer in the form " A >causes/enables> B". Try to use phrases and sentences from the story to compose your answer when possible.

story: Cassie's Mom packed her lunch and wave her off to school. Cassie was looking forward to her lunch. When lunch time came Cassie couldn't find her lunch anywhere! Then Jen started laughing and told her she had hidden it for a joke. Jen returned Cassie's lunch with a smile.
selected sentence: Then Jen started laughing and told her she had hidden it for a joke.
Cassie can't find her lunch anywhere >Causes/Enables> Jen tells Cassie she hid her lunch as a joke