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.

[Q]: story: Mark decided to go out of town to find a job. While looking for a job she saw a lady looking for job too. He decided to talk to the lady and ask her name. Her name is beth and they decided to look for a job together. Since then they became friends and they both have a job.
selected sentence: Since then they became friends and they both have a job.
[A]: Mark meets Beth >Causes/Enables> Mark and Beth become friends

[Q]: story: Boris went to the drive-in with his friends on Wednesday. He saw an old sci-fi movie. About half-way through, he bought some popcorn. He thought the cashier was cute, so he asked for his number. Boris is going to the drive-in again, tonight, with his new date.
selected sentence: About half-way through, he bought some popcorn.
[A]: Boris goes to the drive-in >Causes/Enables> Boris buys popcorn

[Q]: story: Kelly works a job as a waitress. An elderly couple came inside the restaurant. She waited on them and helped them choose their food. They smiled at her as they left. Kelly discovered a twenty dollar tip for her hard work!
selected sentence: Kelly discovered a twenty dollar tip for her hard work!
[A]:
Kelly helped an elderly couple at a restaurant >Causes/Enables> Kelly got a twenty dollar tip