Anchor: Two little boys in bike helmets hanging out.
Entailed: The two boys are wearing helments.
Contradiction: the two boys are actually skateboarders.
Contradiction: You can buy it from anyone; it doesn't change anything.
Contradiction: There is a relationship between postal density and average unity cost.
Contradiction: The 2nd strategic plan for FY 1998-2002 started in 1994.
Contradiction: Children are searching in vain for fruit.