Anchor: Shafts fall deep into chasms under the mountain.
Entailed: The shafts were under the mountains.
Contradiction: The shafts were along the river, in the plains.
Contradiction: It is much smoother to file a paper tax return according to Mr. Gingrich.
Contradiction: There are differences in the reason for doing things. 
Contradiction: Musicians drinking beer
Contradiction: A man and woman are hang gliding