Anchor: He could not expect Teodoro to come to his aid a second time.
Entailed: Teodoro came to his aid again.
Contradiction: Teodoro did not come to his aid.
Contradiction: The girl has begun surfing lessons on the beach.
Contradiction: I am concerned that the summer is going to be bad.  
Contradiction: The company didn't have to pay anything in the lawsuit.
Contradiction: Man standing on busy street.