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: Dolphins start watching up on the beach in San Diego. Some friends get together and spend the night pushing them back in. After that is over with the friends hang out on the beach. They start a fire when the sun goes down. They sing, play guitar and drink some beer.
 selected sentence: They sing, play guitar and drink some beer.

The friends get beer >Causes/Enables> The friends drink