Anchor: People mill around a busy plaza.
Entailed: the people are walking
Contradiction: the people are sitting
Contradiction: There's no question whether or not it was a mistake. 
Contradiction: You're supposed to shell them, but a lot of us suck the head.
Contradiction: The man is holding the ball in his catcher's mitt.
Contradiction: The capacity value shown could rapidly change if the manufacturers felt compelled to.