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.

[Q]: Sentence1: A mother looked at the face of her newborn baby boy. Sentence2: Her dream was to give him the childhood that she was not given. Sentence3: She sacrificed time and energy to accomplish her goal. Sentence4: The boy had a very happy childhood.
[A]: 2, She dreamed of their future together.

[Q]: Sentence1: Mark opened the back door of the restaurant and walked outside. Sentence2: Halfway to the dumpster, he saw many birds, feeding on the trash. Sentence3: He had gone hungry before so he knew all things must eat. Sentence4: He felt bad for the birds.
[A]: 2, It was the time of the day to take out the trash.

[Q]: Sentence1: Dave wanted buy a gun. Sentence2: He went to the gun store and asked many questions. Sentence3: He decided he wanted to buy a big shotgun. Sentence4: Dave bought it and enjoyed his purchase.
[A]:
3, He looked at big guns and little guns.