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: Dave had just watched a video of dogs trying lemons. He had never laughed so hard in his life. He decided to feed his dog a lemon. When he gave his dog a lemon, his dog bit him in anger. Dave learned not to play mean tricks.
selected sentence: He had never laughed so hard in his life.
Dave watches dogs eat lemons >Causes/Enables> He laughs

story: Yolanda wanted to get a haircut. She set up an appointment with her favorite hairdresser. She decided to cut her hair short. Her hairdresser spent 2 hours cutting her hair. Yolanda loves how much lighter her head feels.
selected sentence: Her hairdresser spent 2 hours cutting her hair.
Yolanda decides to get her hair but >Causes/Enables> Yolanda gets her hair cut

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