Complex sentence: A Velvet Elvis is a painting of Elvis Presley on velvet, sometimes known as a Velvis, a portmanteau originally coined in 1984 by David Knechel.
Split into simpler sentences: A Velvet Elvis is a painting of Elvis Presley on velvet. It is sometimes known as a "Velvis", which is a portmanteau originally coined in 1984 by David Knechel.