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: Sal talked about all his coworkers behind their backs. Sentence 2: When Marie got married, she didn't invite Sal. Sentence 3: All the other coworkers were there. Sentence 4: They loved having a night out without Sal's negativity. Sentence 5: Sal couldn't understand why he'd not been invited.

Clueless Sal