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: Ray got up to let the dog out but he was half asleep. While Rocky did his business Ray rubbed his eyes and yawned. Ray hated being awakened in the middle of the night. When Rocky didn't come back right away Ray called him. If Ray had been awake he would have noticed the bear on his porch.
 selected sentence: While Rocky did his business Ray rubbed his eyes and yawned.

Ray gets woken up >Causes/Enables> Ray yawns