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: Frank decided to cook his wife a special dinner. Sentence 2: He went to the store and picked up the ingredients. Sentence 3: He came home and prepared the dinner. Sentence 4: His wife called and said she would be running later than usual. Sentence 5: Frank ate dinner alone and was sad the surprise was ruined. Choices: a. Blown Surprise. b. First Day of Kindergarten.

a