Anchor: Three dogs in the snow by a fence.
Entailed: There are some dogs.
Contradiction: There is an aligator.
Contradiction: There is no way to establish causality in cases like these.
Contradiction: Congress' goal was to provide legal representation to aliens.
Contradiction: The railroad route that connected Los Angeles to Salt Lake City bypasses the Last Vegas Valley.
Contradiction: Loaves of fresh bread fell down from above.