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: I was riding on the bus today. A person bumped into me. The person who bumped into me started to hurry off the bus with my pur I screamed to the bus driver to not let him off. The bus driver kept the door closed till the police came.
 selected sentence: I was riding on the bus today.

I got on >Causes/Enables> I was riding on the bus.