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: Two girls have boyfriends in isis. They joined for their boyfriends. They saw them killing people. They got nervous about it and tried to leave. ISIS killed them.
 selected sentence: They joined for their boyfriends.

The girls decide to join >Causes/Enables> The girls join