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: Wilson showed Ben how to make compost with grass and leaves. Sentence2: Ben started a compost pile in the fall with his failed plants. Sentence3: Ben added leaves to his compost pile and waited until spring. Sentence4: The next year his garden was beautiful and healthy.
Example Output: 1, Ben's garden was not very good, because things grew, but not well.

Example Input: Sentence1: Matt decided to go bar hopping with his two friends one night. Sentence2: They drank 3 shots in one bar. Sentence3: They went to 4 more, drinking 3 shots in each. Sentence4: Matt and friends walked home and slept it off.
Example Output: 4, Matt ended up getting too drunk and lost his phone.

Example Input: Sentence1: After dropping her kids off at school, Tammy donated blood. Sentence2: She drank some juice to refuel before running a few errands. Sentence3: Tammy then headed for the gym to her favorite aerobics class. Sentence4: Forty minutes into the intense workout Tammy passed out.
Example Output:
5, Tammy learned a valuable lesson.