Anchor: Some examples, taken from the delightful Samuel Johnson Sound Bite Page maintained by Frank Lynch.
Entailed: Frank Lynch maintains the Samuel Johnson Sound Bite Page.
Contradiction: Samuel Johnson Sound Bite Page is maintained solely by Ray Stallone. 
Contradiction: The boy is jumping from trampoline with empty hands.
Contradiction: The building is burning.
Contradiction: Three blonde boys play in a grassy park.
Contradiction: People are signing up for classes.