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.

Example Input: historically , the sensations of itch and pain have not been considered to be independent of each other until recently , where it was found that itch has several features in common with pain , but exhibits notable differences.
Example Output: the sensations of itch and pain have never been considered to be independent of each other until recently where it was found that itch has many features in common with pain but exhibits differences.

Example Input: he returns in the 2007 series of doctor who , reuniting with the tenth incarnation of the doctor , and returned again for the 2008 series.
Example Output: he comes back in the 2007 series of doctor who , joining again with the tenth embodiment of the doctor , and returns again for the 2008 series.

Example Input: the form of chess played is speed chess in which each competitor has a total of twelve minutes for the whole game.
Example Output:
one way to play chess is called speed chess where each player has twelve minutes for the whole game.