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.

Input: Consider Input: they are rivaled as biological materials in toughness only by chitin.

Output: only chitin rivals them as biological materials.

Input: Consider Input: after reviewing the documents , some historians suggest that adams does not deserve equal credit with le verrier.

Output: after looking at the documens , some historians say that adams does not deserve equal credit with le verrier.

Input: Consider Input: much of the province lies in the plain of the arno river and has thus become an exurban sprawl around the city of florence.
Output: a lot of the province is in the plain of the arno river , and has thus become an outside-city sprawl around the city of florence.