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: Dad was supposed to watch the kids when mom went to work. Sentence 2: After mom left, dad fell asleep on the sofa. Sentence 3: Opal, his eight-year-old daughter, found him sleeping. Sentence 4: While dad was asleep Opal put several barrettes in his hair. Sentence 5: Mom returned, and laughed at dad sleeping with hair clips in his hair. Choices: a. Dad Babysits. b. Goal!.

a