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'.

Ex Input:
Sentence 1: Tom was not successfully reaching his goals, regularly. Sentence 2: He wanted to reach his goals. Sentence 3: He decided to engage in dreamlining. Sentence 4: Tom would write out his dreams, and each step necessary to reach them. Sentence 5: Tom followed each step and began reaching his goals consistently. Choices: a. Dreamlining. b. Shark Cage.

Ex Output:
a

Ex Input:
Sentence 1: Alex and Kiley were hanging out one weekend. Sentence 2: They decided to watch a movie one morning. Sentence 3: When it ended they decided to just put on another. Sentence 4: Soon they found themselves watching movies for days in a row. Sentence 5: They didn't come out of their marathon until the end of the weekend. Choices: a. New phone. b. The Movie Marathon.

Ex Output:
b

Ex Input:
Sentence 1: A science team worked on research. Sentence 2: They found out about robots. Sentence 3: They decided to build one. Sentence 4: They got funding. Sentence 5: The robot spoke to people. Choices: a. Robot. b. Flights.

Ex Output:
a