Definition: In this task, you're given five sentences, numbered 1 through 5. Your job is to generate a title for the story that makes complete sense. The title must be short, with less than three words, use simple language, and include the main topic of the story.
Input: Sentence 1: My grandma had a best friend named Diane. Sentence 2: Diane was diagnosed with terminal cancer. Sentence 3: Grandma promised her that she would be a grandma to Diane's grandkids. Sentence 4: A few months later, Diane passed away. Sentence 5: My grandma has kept her promise ever since.

Grandma's Promise