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: Return Fire. Sentence 1: A couple of people gathered in the parking lot. Sentence 2: They ignited a few fireworks. Sentence 3: Dan had to reignite some of them. Sentence 4: However, he got burned by one of the sparks. Choices: a. The officer immediately arrested him. b. His mom took him to the hospital to get a few stitches.
Example Output: b

Example Input: Title: The Crush. Sentence 1: Justin had a crush on Kate from the moment he saw her at school. Sentence 2: Kate always smiled and said hello, but Justin could only blush. Sentence 3: At the school dance, Justin saw Kate sitting quietly by herself. Sentence 4: Summoning every bit of his courage, Justin asked her to dance. Choices: a. Kate said yes. b. After that they played some duets with teacher.
Example Output: a

Example Input: Title: Political beliefs can have negative responses. Sentence 1: Pattie wants to vote democrat. Sentence 2: But her dad is an extreme republican. Sentence 3: He told her he'd disown her if she continues to support democrats. Sentence 4: Pattie held her ground against her dad and will remain a democrat. Choices: a. So she decides to make a big move and will be moving to Hawaii. b. Her father has decided to disown her and they are no longer speaking.
Example Output:
b