Anchor: see i've never seen that
Entailed: I have not yet seen that.
Contradiction: See, I am tired of seeing that already.
Contradiction: Every worker knows that the retirement age for Social Security has changed.  
Contradiction: I think that the United States is only thing keeping drug cartels from running much of Central and Latin America.
Contradiction: A man is seated on a park bench in the open park.
Contradiction: children at school