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: It was Oliver's birthday. He had opened a lot of presents, but he had one favorite. It was a toy car with a remote control. He spent the entire day playing with it, all over the house. He thanked his parents for it a bunch.
 selected sentence: He had opened a lot of presents, but he had one favorite.

Oliver gets presents >Causes/Enables> Oliver opens presents