In this task, you're given five sentences, numbered 1 through 5, and two options a and b for possible titles for the story. Your job is to choose the title that better fits the story. Indicate your choice by 'a' or 'b'.

Input: Consider Input: Sentence 1: Eleanor went on a vacation to Maui. Sentence 2: While there, she wanted to have an authentic luau experience. Sentence 3: She paid for a big resort luau. Sentence 4: It was fun, but felt cheesy and inauthentic. Sentence 5: A local later told her that there are no authentic luau events left. Choices: a. Oxygen. b. Luau.

Output: b

Input: Consider Input: Sentence 1: Clara had always flown in coach. Sentence 2: One day, an airline bumped her to first class! Sentence 3: She was so amazed that she wasn't sure what to do with herself. Sentence 4: She got free drinks and food and a hot towel. Sentence 5: Clara decided she could never go back to coach. Choices: a. Bird. b. First Class.

Output: b

Input: Consider Input: Sentence 1: Tom was having a small party. Sentence 2: He only wanted close friends there. Sentence 3: A friend decided to take a date. Sentence 4: It was awkward and Tom didn't appreciate it. Sentence 5: The date felt rightfully unwelcomed. Choices: a. Unwanted Guest. b. last goodbye.
Output: a