Anchor: a skier with poles is walking through the snow
Entailed: a skier is walking through the snow
Contradiction: a snowboarder with poles is walking through the snow
Contradiction: There are 5 men working on the street lights.
Contradiction: I believe that when we were in Memphis, there was one there.
Contradiction: Your wanderings on the Web leave no trace.
Contradiction: Somebody here has a slightly unusual hat on.