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: Canadian Vacation. Sentence 1: I live in the northern central United States. Sentence 2: Despite the proximity, I have never visited Canada. Sentence 3: My family are planning next year's vacations. Sentence 4: I put in my vote to see some parts of Canada. Choices: a. I was outvoted and Canada would have to wait. b. Ron left and was very disappointed.

Ex Output:
a

Ex Input:
Title: John Makes A Sandwich. Sentence 1: John realizes that he hasn't eaten anything all morning. Sentence 2: He is beginning to feel hungry. Sentence 3: John decides to make himself a sandwich to eat. Sentence 4: He fills the sandwich with meat and vegetables. Choices: a. John is glad that he got something to eat this morning. b. Cathy did so well at the interview, that they hired her on the spot.

Ex Output:
a

Ex Input:
Title: Q-tips. Sentence 1: My parents always buys Q-tips. Sentence 2: I never use them for general purposes. Sentence 3: I use them to clean hard to reach places. Sentence 4: Usually the Q-tips only last about a week. Choices: a. My parents complain about the way I use them. b. This was strange because there was people waiting longer than us.

Ex Output:
a