Determine if the sentence is true based on the text below:
Jonathan Williams died of cancer on March 16th, 2008

Jonathan Williams (March 8, 1929 March 16, 2008) was an American poet, publisher, essayist, and photographer. He is known as the founder of "The Jargon Society", which has published poetry, experimental fiction, photography, and folk art since 1951.
It's impossible to say