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.

Title: While out walking my dog today, we encountered a large cow. I quickly got my dog and I to safety and called the sheriff. The sheriff's department had to come out and find the owners. Choices: a. The cow was in a neighbor's yard and started to charge at us. b. The cows had torn down a fence and were grazing in the yards. c. We got to the bar, I looked over and smiled to know she is my mother.
2a, 5b

Title: When he started gaining weight he decided it was time to try. At first he went 2 days a week, because he forced himself to. He started enjoying himself and began going 4 days a week. Choices: a. Kevin looks great now and he says he will never stop going regularly. b. Kevin never thought about joining the gym. c. Tom wound up eating a sandwich he didn't want.
5a, 1b

Title: His grandparents were visiting. Tim didn't realize as he was blasting his playlist. His grandparents were negatively shocked. Choices: a. Tim was into hard metal music. b. He sped off extremely fast. c. Tim explained it was just music.
1a, 5c