Anchor: No, admitted Tuppence, "I haven't but I know some one who has."
Entailed: Tuppence knows someone who has more experience than her.
Contradiction: Tuppence does not know anyone.
Contradiction: "We will never find him" said Gabriel. 
Contradiction: Two soccer teams are playing each other.
Contradiction: A woman makes out with a man at the beach.
Contradiction: Besides my left knee I am in pretty decent shape.