Anchor: The man nodded under his three-cornered hat.
Entailed: The man wore a hat. 
Contradiction: The man's hat had two corners. 
Contradiction: A woman is sitting on a bench.
Contradiction: You can get out here fast if you take a motorboat.  
Contradiction: My friend said I can handle the court preceedings on my own fine.
Contradiction: There is a case study.