Given the task definition and input, reply with output. In this task, you're given a sentence and your task is to generate a simplified sentence that focuses on lexical paraphrasing from the original sentence given in the input.

as the truth about the mysterious others begins to unfold , one of the crash survivors betrays the other castaways , and the cause of the plane crash is revealed.
as the truth about the mysterious others begins to reveal , one of the crash survivors betrays the other castaways , and the cause of the plane crash is revealed.