Anchor: i don't know a thing about fishing so
Entailed: I have no knowledge of fishing.  
Contradiction: I know everything there is to know about fishing.  
Contradiction: The main similarity between congressional Republicans and Pat Buchanan was their ability to apply their beliefs to WWII.
Contradiction: My wife made a lot of different crafts last year as Christmas gifts.
Contradiction: No one is having a picnic.
Contradiction: The four speed skaters are on the same team.