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: Marissa was a finalist in her school's spelling bee. She was not sure how to spell her next word. To fool the judges, she mumbled one of the vowels. Her trick worked and she won the spelling bee. Even though she won, she is not proud of her victory.
 selected sentence: To fool the judges, she mumbled one of the vowels.

Marissa competes in a spelling bee >Causes/Enables> She mumbles a vowel