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: Billy was three years old. He loved to play with blocks. He only had one set to play with. His father bought him a new set to play with. He now has more blocks than he knows what to do with.
 selected sentence: Billy was three years old.

Billy survives the first three years of Billy's life >Causes/Enables> Billy is three years old