original: 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 .
simplifications: it is not known how much story is true , but historians do know that china was the first people to use silk . even though we do n't know how much of the story is true , historians are pretty sure that people in china used silk before anyone else . although unconfirmed , it 's said that china was the first civilization to use silk . historians know that china was the first civilization to use silk . it is not known how much , if any , of this story is true , but people who study history do know that china was the first group of people to use silk . 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 . 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 . nobody knows the truth behind the story but historians do know that china was the first civilization to use silk .