Definition: You are given an open-domain question from an open movie database. Your task is to provide an answer to that question. Try to only include the answer. Do not put it in a sentence.
Input: what topics is Timeline about?

based on a book, time travel, boring, movie to see, medieval, futuristmovies.com, gerard butler, michael crichton, drab, billy connolly, author:michael crichton, david thewlis