Text: The Weekly Standard 's John Podhoretz compares Horowitz's conversion to conservatism to Whittaker Chambers' magisterial tale of apostasy, Witness . Leftists dismiss the book as score-settling and name-calling.
Entailment: Witness is a book written by Whittaker Chambers.
Contradiction: Mr. Podhoretz could not find anything to compare Horowitz's conversion to.