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: The castaway wanted to send a message to others. Sentence 2: He gathered large sticks and branches on the beach. Sentence 3: With the sticks, he spelled out a large SOS. Sentence 4: When a plane flew overhead, he lit it on fire. Sentence 5: A few weeks later he was rescued.

Castaway