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'.

Example Input: Sentence 1: The man saw a friend at a coffee shop. Sentence 2: He challenged his friend to a game of chess. Sentence 3: His friend agreed. Sentence 4: His friend offered a bet. Sentence 5: They played a game for money. Choices: a. Chess. b. Peter's peppers.
Example Output: a

Example Input: Sentence 1: Dolly read the prayer of Jabez. Sentence 2: It inspired her to move. Sentence 3: She left her teaching job. Sentence 4: She took a better job offer. Sentence 5: She was happy for a change. Choices: a. Flat Tire. b. Prayer of Jabez.
Example Output: b

Example Input: Sentence 1: Tom was struggling in school. Sentence 2: He decided to hire a tutor. Sentence 3: He found the tutor very useful. Sentence 4: His grades soon improved. Sentence 5: Tom became very happy with his academic performance. Choices: a. Being rude. b. School.
Example Output:
b