In this task, you're given the title of a five-sentence story, the first four sentences, and two options for the fifth sentence as a and b. Your job is to pick the sentence option that seamlessly connects with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes more sense.

Example Input: Title: Bad Prank. Sentence 1: Tim wanted to scare his wife. Sentence 2: He thought of an elaborate prank. Sentence 3: At night he set it up and pulled it off. Sentence 4: His wife was really scared. Choices: a. I went home to tell my husband and make a plan. b. She never trusted him again.
Example Output: b

Example Input: Title: The Good Life. Sentence 1: Exploring is one of Dans favorite things to do. Sentence 2: Usually he takes a vacation where there are caves and springs. Sentence 3: He spends his time there checking the place out in detail. Sentence 4: He writes about his experiences on his website. Choices: a. He loves his life! b. She had never slept outside before!
Example Output: a

Example Input: Title: Dehydration. Sentence 1: Sue wasn't feeling well. Sentence 2: She had stayed in bed all day. Sentence 3: Sue hadn't eaten all day. Sentence 4: She barely drank anything. Choices: a. Rebecca was mad but she fell asleep from the golf show. b. Sue got dehydrated.
Example Output:
b