Given the task definition and input, reply with output. In this task, you're given four sentences of a story written in natural language in which one part is missing. Your job is to predict the position and missing part of the story and return in the following format: position, missing part. The missing part is a sentence that completes the story, and the position is the number of the missing sentence in the new story.

Sentence1: The two guys played a friendly match. Sentence2: The score was almost tied. Sentence3: Then Ed made a slam dunk. Sentence4: Ed won the game.

1, Ed challenged his brother to a basketball game.