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: Carly was waiting for Sam to call her. Sentence2: He promised to on Friday. Sentence3: It was now late Saturday and she hadn't heard anything. Sentence4: Finally she decided to call him.

A: 5, Sam answered the phone.
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Q: Sentence1: Then, his friend told him that plastic is bad for the environment. Sentence2: Bob decided to forego his plastic bags. Sentence3: Bob invested in some reuseable grocery bags. Sentence4: Bob used his reusable grocery bags to go shopping.

A: 1, Bob used plastic grocery bags to go shopping.
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Q: Sentence1: In 1997 I rode on an old bus. Sentence2: A local group rented a 1957 transit bus, painted in old colors. Sentence3: I rode on the bus as it went all over suburban Boston. Sentence4: I had a great time!

A:
4, I took plenty of photos.
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