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.

Ex Input:
Title: Crab legs. Sentence 1: Kate's parents were cooking crab legs. Sentence 2: It was her first time eating them. Sentence 3: Kate thought they were delicious. Sentence 4: They were her new favorite food. Choices: a. Unfortunately they were too expensive to eat them regularly. b. Dan got some gas at the station - and the woman's phone number!

Ex Output:
a

Ex Input:
Title: Piano Contest. Sentence 1: Tim decided to enter a piano contest. Sentence 2: There was a lot of stiff competition. Sentence 3: Tim played his little heart out. Sentence 4: The judges finally announced the winners. Choices: a. Tim won and took home the first place trophy. b. She left the room feeling great, like she had nailed it.

Ex Output:
a

Ex Input:
Title: Todd gets a chance. Sentence 1: Todd has been coaching his whole life. Sentence 2: He always wanted to be a head coach. Sentence 3: He worked hard and hard coaching many years. Sentence 4: Until one day he got the call to be the Head Coach of a team. Choices: a. Todd went on the be on the greatest coaches in history. b. After I tightened the antennas the notebook connected with wi-fi.

Ex Output:
a