Anchor: Yours truly, A. CARTER.
Entailed: Signed by A. Carter.
Contradiction: A. Carter did not sign anything.
Contradiction: A man is digging a hole.
Contradiction: He walked to get some water.
Contradiction: Poirot talked to Cynthia himself, asking to visit her at work at the hospital. 
Contradiction: Three wheelchair basketball players playing basketball in field.