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: Order taking too long. Sentence 1: Tina ordered a sub. Sentence 2: It was fast food. Sentence 3: But it was taking too long. Sentence 4: Tina then got angry. Choices: a. So she complained to management. b. It took her over a year to get over it and date someone else again.
Example Output: a

Example Input: Title: A Lesson to the Cat. Sentence 1: Emilia loved cooking, and used to cook for her family on occasions. Sentence 2: Once, while cooking, she went onto attend a call. Sentence 3: When she came back, she found that her cat had eaten the dough. Sentence 4: She gently asked her cat not do so, and next time, her cat helped her. Choices: a. It shocked Catherine and knocked her down a peg. b. She taught her cat a lesson, peacefully and without using violence.
Example Output: b

Example Input: Title: Bat. Sentence 1: Kathleen had a very big metal bat. Sentence 2: She was given it by her father. Sentence 3: One day, the bat went missing. Sentence 4: Kathleen searched everywhere. Choices: a. Eventually, Kathleen found it in the bedroom. b. Chavez was able to safely reach Mexico.
Example Output:
a