Original sentence: Christopher John Matthews (born December 17 1945) is a television talk show host and pundit, known for a nightly hour-long talk show, Hardball with Chris Matthews, which is televised on the American cable television channel MSNBC
Edited sentence: Christopher John Matthews (born December 17 1945) is a television talk show host and pundit, well known for a nightly hour-long talk show, Hardball with Chris Matthews, which is televised on the American cable television channel MSNBC