Definition: 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.
Input: story: Bob keeps losing his wallet. So buys a wallet with a chain. He and his friends think it looks ridiculous. But the chain works. Bob no longer loses his wallet.
 selected sentence: He and his friends think it looks ridiculous.

Bob buys a wallet chain >Causes/Enables> He and his friends think it looks ridiculous 