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: Kyle stood nervously in front of the 140 students. Sentence 2: He was introduced by the professor in charge of the class. Sentence 3: He wished he had brought water because his mouth felt full of cotton. Sentence 4: It was time, and he opened his mouth, hoping words would come out. Sentence 5: They did, and the professor praised him for how well his lecture went. Choices: a. Teaching Class. b. Winning the Lottery.

Ex Output:
a

Ex Input:
Sentence 1: Watson had always wanted to learn the saxophone. Sentence 2: After talking to his parents, they bought him one. Sentence 3: At first, he could not play anything. Sentence 4: After a lot of hard work, he could play it. Sentence 5: Now, Watson is very good at the saxophone. Choices: a. Saxophone. b. Parents.

Ex Output:
a

Ex Input:
Sentence 1: Uncharacteristically, Malik ran toward the brouhaha. Sentence 2: He could hear his mother shouting his name as he approached. Sentence 3: A path cleared in the middle of the crowd cleared for him. Sentence 4: His mother was finally revealed, sweating and bewildered. Sentence 5: He walked slowly toward her, his hand outstretched to make contact. Choices: a. The Basket. b. The Crowd.

Ex Output:
b