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: Susan wanted to publish an anthology. Sentence 2: She picked a theme. Sentence 3: She got her friends to write on the theme. Sentence 4: She edited all the smaller pieces together. Sentence 5: She published it! Choices: a. Marriage. b. Anthology.
Example Output: b

Example 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.
Example Output: a

Example Input: Sentence 1: Sam was sad because he was far away from his family. Sentence 2: He held a party to cheer himself up. Sentence 3: Sam invited all his work friends to come. Sentence 4: The party was a huge success. Sentence 5: Sam felt better knowing his friends cared about him. Choices: a. Sam's Party. b. Add An Egg.
Example Output:
a