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.

Input: Consider Input: Title: Purse left behind. Sentence 1: Mary took her purse into the bathroom stall and set it on the shelf. Sentence 2: Without thinking, she exited the bathroom without her purse. Sentence 3: Later she realized she didn't have her purse. Sentence 4: She ran to the bathroom and found her purse. Choices: a. Unfortunately, her wallet had been emptied and she was sad. b. James passed the written part which made him happy.

Output: a

Input: Consider Input: Title: Terry the Typist. Sentence 1: Terry is a professional typist. Sentence 2: Today, he was in for a long day. Sentence 3: He had to type a whole 500 page book in three hours. Sentence 4: Terry typed away and was getting blisters on his fingers. Choices: a. She hadn't known how far she was from home! b. He finished typing the book with a few minutes to spare.

Output: b

Input: Consider Input: Title: Once a cheater always a cheater. Sentence 1: Raquel met her husband 15 years ago. Sentence 2: He had a girlfriend he was cheating on that she didn't know about. Sentence 3: She was already in love with him so she fought to marry him. Sentence 4: Unfortunately, her husband didn't think that highly of their marriage. Choices: a. He cheated on Raquel the same way he cheated on the girl before her. b. Today he violently attacked a tire and wouldn't stop biting it.
Output: a