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: Ivan was a professional dog walker, and he worked often. His least favorite dog to walk, was a nasty dog named Spike. The dog often chased Ivan around the house, trying to bite him. Eventually Ivan realized he was still doing his job, just differently. The dog was getting exercised by running after Ivan every visit!
 selected sentence: The dog was getting exercised by running after Ivan every visit!

Ivan visits the dog >Causes/Enables> The dog chases Ivan