Anchor:  He slapped the cover shut and stuck the sun-tipped awl where it would light as much of the orrery as possible.
Entailed: The cover was shut by him.
Contradiction: There was no light that entered the orrery.
Contradiction: The girls are reading books.
Contradiction: A surfer is on a wave
Contradiction: I am more empathetic than my sons. 
Contradiction: There are two parasailors who will land on the beach