Anchor: A hiker in a tent on a mountain.
Entailed: A hiker is in a tent outdoors.
Contradiction: A hiker is standing on a mountain with a tent nearby.
Contradiction: Boy playing football.
Contradiction: People want to be able to cast their own votes, but they still care what their union says. 
Contradiction: There were no legal obstacles in the way of hiring.
Contradiction: A snowboarder is getting some air on a snowy hill.