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: Nathan wanted to take his new boat out to sail. Sentence 2: He decided to sail it in the canal near his house. Sentence 3: Out in the water, he relaxed on the waves. Sentence 4: Suddenly, an alligator appeared near the boat. Sentence 5: He was frightened, and turned around to head home.

Alligator