Anchor: Many echo Leonardo da Vinci's comparison to sacks of nuts. 
Entailed: Leonardo Da Vinci was compared to a sack of nuts.
Contradiction: No one has compared Leonardo Da Vinci to sacks of nuts.
Contradiction: You never get to take your retirement pay.
Contradiction: A group of people have what they need to perform their job.
Contradiction: A boy doesn't have shaving cream on his face
Contradiction: There is an animal in water