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.

story: Stan moved a lot. He had switched school four times. He never made friends because he knew he'd leave too fast. After being in Texas for two Year's he finally made his first friend. Stan's moving to New Mexico next week.
selected sentence: He had switched school four times.
Stan moved a lot >Causes/Enables> Stan changed schools four times

story: Lisa and Debbie were playing in the yard near the pine tree. All of a sudden a bird dove at them. They ran off as it chased them. It finally flew back over to the tree. She was protecting her nest.
selected sentence: She was protecting her nest.
Lisa and Debbie play near the bird's nest >Causes/Enables> The bird protects its nest

story: Andy loved long car rides. He asked his parents if he could learn to drive. When he was of age, his parents agreed. Andy put the car in gear and took off on his first trip. He learned to drive very quickly!
selected sentence: When he was of age, his parents agreed.
Andy asks his parents if he could learn to drive >Causes/Enables> Andy's parents agree when he is of age