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: Nina demanded the man turn around. She was certain he was her ex-boyfriend. She wanted to yell at him some more about the past. But when the man turned around, it was Someone else. Nina felt very embarrassed and walked away after apologizing.
 selected sentence: She wanted to yell at him some more about the past.

Nina sees a man who she thinks is her ex-boyfriend >Causes/Enables> Nina wants to yell at the man