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 at the library doing homework. Sentence 2: It was due at a specific time. Sentence 3: He was working hard on his laptop. Sentence 4: Before turning it in the laptop ran out of battery. Sentence 5: Tom lost all his work. Choices: a. The Runaway. b. Out of Power.

Ex Output:
b

Ex Input:
Sentence 1: We are having a drought in our area. Sentence 2: We have only had rain a couple times in the past two months. Sentence 3: I have had to water our garden frequently. Sentence 4: The garden doesn't like our chlorinated water very well. Sentence 5: My bean plants all died due to lack of rain. Choices: a. Drought. b. Pranks.

Ex Output:
a

Ex Input:
Sentence 1: As the doctor gave me the first shot, he told me I would be nervous. Sentence 2: I thought he meant I would get scared. Sentence 3: When I got home and sat on the couch, I found out what he meant. Sentence 4: I couldn't stop my legs and arms from trembling. Sentence 5: I tried to be still, but even in my sleep, I trembled all day. Choices: a. Nervous. b. Pop Quizzes.

Ex Output:
a