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.

Ex Input:
Sentence1: My friends and I were playing the playstation inside the house. Sentence2: Everyone was having a good time until my friend spilled his drink. Sentence3: The juice feel on the floor and soaked the play-station. Sentence4: The system short-circuited and couldn't turn on again.

Ex Output:
Unfortunately, we had to throw the system away.

Ex Input:
Sentence1: Tim and Eric were putting together a jigsaw puzzle. Sentence2: They were able to match up the pieces. Sentence3: The picture they were getting didn't match the box, though. Sentence4: They kept going.

Ex Output:
Eventually they realized it was upside down.

Ex Input:
Sentence1: Kevin wanted to learn how to skateboard. Sentence2: He bought a used board from a friend. Sentence3: He then took lessons at the skate park on the weekends. Sentence4: After a few months he was able to ride down the sidewalk.

Ex Output:
After a year Kevin was able to do tricks at the skate park.