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.

Example Input: Sentence1: Meghan and Scott wanted to see their favorite band play in a concert. Sentence2: Meghan and Scott were trying hard to buy tickets. Sentence3: Just when the concert was almost sold out, Meghan found two tickets. Sentence4: They were so relieved.
Example Output: 2, Tickets went on sale online and the server was very busy.

Example Input: Sentence1: Tina was having her first skating competition. Sentence2: She was incredibly nervous. Sentence3: She was afraid something would go wrong. Sentence4: Thankfully she did great.
Example Output: 5, Tina took second place in the competition.

Example Input: Sentence1: When I first moved into my house, I didn't know my neighbors. Sentence2: While mowing one day, I found a kickball in my yard. Sentence3: I grabbed the ball and went next door to return it. Sentence4: They were very friendly.
Example Output:
3, I felt this was the perfect opportunity to meet my neighbors.