Anchor: Two men are wearing helmet on their head.
Entailed: The men wear helmets.
Contradiction: The men refuse to wear helmets.
Contradiction: A man is running a marathon.
Contradiction: A man is carrying a large red bag higher up the stairs.
Contradiction: GAO-01-199SP was published in January of 2003.
Contradiction: Use of  3.6 mg/L (anhydrous) sodium thiosulfate will reduce levels of 1.0 mg chlorine/L