Instructions: 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: it is not known how much , if any , of this story is true , but historians do know that china was the first civilization to use silk.
Output:
it is not known how much story is true , but historians do know that china was the first people to use silk.