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: Martha was a terrible cook and her boyfriend knew it. Sentence2: She would practice things she learned on the shows. Sentence3: As the days went by her cooking began to slowly get better. Sentence4: After a while, everything Martha cooked was delicious.
2, He introduced her to cooking shows and watched them with her.