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 never liked his nose. Sentence 2: He decided to save up money to fix it. Sentence 3: Eventually Tom had plastic surgery. Sentence 4: Tom was pleased with the results. Sentence 5: His self esteem went up. Choices: a. Plastic Surgery. b. Lost Luggage.

Ex Output:
a

Ex Input:
Sentence 1: Laurel is pregnant. Sentence 2: She is very nervous to find out the sex of the baby. Sentence 3: Her and her husband already have 3 boys. Sentence 4: Laurel plans an ultrasound to find out the baby's sex. Sentence 5: She finds out she is having a girl and is very excited and relieved. Choices: a. New Baby. b. Giggling.

Ex Output:
a

Ex Input:
Sentence 1: Rachel wanted to attend the movies with her friend Greg. Sentence 2: He promised to go with her last weekend. Sentence 3: Greg failed to show up at the movies. Sentence 4: Worried that something bad had happened Rachel phoned him. Sentence 5: Turns out Greg had driven to the wrong movie theater. Choices: a. Flat Tire. b. Rachel.

Ex Output:
b