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: Michelle's dog had puppies. One puppy was brown with a black mask on her face, like a brown panda. When Michelle's dad said she could keep her, Panda became her name. As Panda grew, over time her mask faded away. When asked about her name, she smiled because it was their secret.
 selected sentence: As Panda grew, over time her mask faded away.

Panda grows >Causes/Enables> Her mask fades away