In this task, you're given the title and three arbitrary sentences out of a five-sentence story. You are also given three additional sentence options, a, b, and c, that may or may not belong to the story. Your job is to pick the two options that seamlessly connect with the rest of the story and their positions in the sentence order of the story; note that the selected choices may fit into the story at any point. Your answer must be in the form of '2a, 5b', where '2a' means the candidate sentence 'a' will be inserted as the 2nd sentence in the story. The answer must also be in the order of the selected choices, i.e., '2a, 5b' is allowed, and '5b, 2a' is not allowed. If options are equally plausible, pick the ones that make more sense.

[Q]: Title: It was fall and there was a pile of leaves outside. A dog came to visit and decided to stay and sleep on the leaves. But he decided to stay to we started feeding him. Choices: a. Will served two tours and is now a decorated officer. b. Once you feed a dog, he can stay as long as he wants. c. Poor dog would duck when we got close to him like he had been beaten.
[A]: 5b, 3c

[Q]: Title: The activists gathered along the sidewalk. The police showed up to arrest them if they didn't leave. The activists refused to go. Choices: a. They held signs and chanted. b. Safely down, he saw mushrooms on the trunk, warning of a rotten tree. c. They were protesting the pipeline that was being built.
[A]: 3a, 2c

[Q]: Title: Will needed to ace his exam to pass. Will decided to spend the entire weekend studying. Unfortunately, Will procrastinated to Sunday. Choices: a. Afterwards everyone walked the mall together. b. Nervous, Will spent all Sunday efficiently studying. c. Will miraculously aced his exam.
[A]:
4b, 5c