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: mercury is similar in appearance to the moon : it is heavily cratered with regions of smooth plains , has no natural satellites and no substantial atmosphere.
Example Output: mercury , which looks like the moon with its many craters and areas of smoothness , has no orbiting bodies around it and a minimal atmosphere.

Example Input: they are rivaled as biological materials in toughness only by chitin.
Example Output: only chitin rivals them as biological materials.

Example Input: people with cardiomyopathy are often at risk of arrhythmia or sudden cardiac death or both.
Example Output:
people with cardiomyopathy are at risk of arrhythmia or cardiac death or both.