Anchor: People stand in a park behind an ornamental boat.
Entailed: There are people outside standing up.
Contradiction: People sit down behind an ornamental boat.
Contradiction: Most visitors to Italy have already seen everything in the south.
Contradiction: He could see that their teeth were white. 
Contradiction: John had had enough of her freeloading in his home and wanted her out. 
Contradiction: You will get jewels to buy an empire.