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: Katy inherited her grandfather's stamp collection. Sentence 2: She thought it was a silly hobby. Sentence 3: She kept it in her attic. Sentence 4: Twenty years later she remembered it was there. Sentence 5: She looked through it and found it very interesting.

Stamp collection