Anchor: The excellent Discovery Ceter is a hands-on museum for children .
Entailed: The Discover Ceter has a children's area.
Contradiction: The terrible Discovery Ceter is a hands-on museum for the children that go there.
Contradiction: The cyclist is replacing his brakes.
Contradiction: The risk of improper payments was assessed by Illinois. 
Contradiction: She stood silent.
Contradiction: I haven't really put much thought into that.