Definition: 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'.
Input: Sentence 1: I went to play Blackjack at the casino. Sentence 2: At one point, I was up two hundred dollars. Sentence 3: I was so excited and felt so powerful I tried to win two hundred more. Sentence 4: I played blackjack into the night. Sentence 5: By morning, I was down one hundred dollars. Choices: a. Blackjack. b. Bad stomach ache.

a