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: Girl Friend. Sentence 1: Timmy just started kindergarten. Sentence 2: He's nervous about meeting new people and making friends. Sentence 3: Wednesday he met a girl named Jessie who asked to be his friend. Sentence 4: Timmy had never made friends with a girl before but he agreed. Choices: a. Twelve years later, Timmy and Jesse finish school as best of friends. b. It took a week to save up for replacement headphones.
Example Output: a

Example Input: Title: The Surgery. Sentence 1: Marla needed her appendix out. Sentence 2: She went to the hospital for surgery. Sentence 3: It went smoothly and she woke up quickly. Sentence 4: She was relieved it was all over. Choices: a. David's mom went home to get his bear. b. Within hours, Marla was up and walking around.
Example Output: b

Example Input: Title: Shake. Sentence 1: Jeff took all the trimmings off of his Christmas tree. Sentence 2: His wife suggested to give the tree a final shake. Sentence 3: Jeff lifted the fake tree and gave a mighty shake. Sentence 4: A few small ornaments fell from the tree. Choices: a. Because of this, Jeff searched harder for more. b. To her surprise, they were very tasty!
Example Output:
a