Anchor: A father with his son on his shoulders walking through a park.
Entailed: Father and son on his shoulder, in the park.
Contradiction: Father and son rafting down a river.
Contradiction: It was on Friday.
Contradiction: The issuance of a national homeland security strategy had to be done in a timely manner according to GAO. 
Contradiction: The insurer is to be held liable even if the insured is intoxicated or under the influence of any drug or narcotic.
Contradiction: Do you think you'll call a few friends?