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: A New Dress. Sentence 1: Joanna was very excited. Sentence 2: Today was her birthday. Sentence 3: Her mother took her out to go shopping. Sentence 4: They went into a clothes store and tried on dresses. Choices: a. Joanna got a beautiful new dress and was so happy. b. Her mom said no.
Example Output: a

Example Input: Title: The Amateur Golfer. Sentence 1: Sam is an amateur golfer. Sentence 2: He goes to the golf course on weekends. Sentence 3: One day Sam hit a hole in one. Sentence 4: His face lit up with delight. Choices: a. The next morning Jeb wakes up to find out he's won the jackpot. b. He left the golf course feeling accomplished.
Example Output: b

Example Input: Title: Mr. Burns's plans Cancelled.. Sentence 1: Mr Burns was planning to go hiking. Sentence 2: He had planned this trip for 3 months. Sentence 3: Mr Burns was going to take Smithy with him. Sentence 4: The day before they were going to on the trip. Choices: a. Someone came up to me on the road and told me to not worry. b. Mr Burns was hit by a car and was unable to go.
Example Output:
b