TASK DEFINITION: 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.
PROBLEM: Title: They agreed on the Italian place. Finally she called her mother. She was waiting at a different Italian place. Choices: a. Joy was supposed to meet her mom for lunch. b. She was there on time and waited and waited. c. Calvin ordered a glass of water with lemon.

SOLUTION: 1a, 3b

PROBLEM: Title: I asked several people for medicine. However, nobody could relieve me from my desk position. I sat with a headache for a while until someone brought me some. Choices: a. Brandon is looking forward to showing off his cooking skills. b. I had a grueling headache all day. c. When nobody had any, I was desperate to go to the store.

SOLUTION: 1b, 3c

PROBLEM: Title: Claire went shopping for perfume one day. She sniffed all the vials at the department store. Then she bought her favorite. Choices: a. Everyone had a fun day. b. But when she got home, she cringed. c. She had accidentally purchased men's cologne!

SOLUTION:
4b, 5c