Alpaca mohair silk and untreated wool

Can you repeat this sentence, but add in punctuation?
Alpaca, mohair, silk and untreated wool:
It means data is not contiguous

Can you repeat this sentence, but add in punctuation?
It means data is not contiguous.
When Willumsen was in his severties he painted a series of three selfportraits that were intended to give posterity an impression of this very special artist

Can you repeat this sentence, but add in punctuation?
When Willumsen was in his severties, he painted a series of three self-portraits that were intended to give posterity an impression of this very special artist.