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: Shane was eating at a high end restaurant. Sentence 2: The restaurant was new and was very crowded. Sentence 3: He waited while to get his drink order. Sentence 4: His server did the best they could but Shane was not happy. Sentence 5: Shane decided to leave a very low tip. Choices: a. Falling on the Bus. b. Bad Tipper.

b