In this task, you're given a four sentences of story written in natural language. Your job is to complete end part of the story by predicting appropriate last sentence which is coherent with the given sentences.

Example Input: Sentence1: Sean rode a bike to work. Sentence2: He always parked the bike out back near the trash. Sentence3: One night, he came out to find his bike gone. Sentence4: They watched the security tapes.
Example Output: Sean saw that his bike had been stolen by a masked man.

Example Input: Sentence1: Brandon was given a 10 page research paper to write for class. Sentence2: He begun working on the paper on his 2003 Dell laptop. Sentence3: Brandon stayed up until 1 in the morning to try and finish his paper. Sentence4: Suddenly, his computer crashed and died.
Example Output: Luckily he had been saving everything on an external disk.

Example Input: Sentence1: When Emily was young she got to go to her first concert. Sentence2: She was nervous because of all of the people at the concert. Sentence3: Emily was very excited to see her favorite artist on the stage. Sentence4: The concert ticket was a gift for Emily for her birthday.
Example Output:
This was the best birthday gift Emily had ever had.