Anchor: A speed boat jumps over waves in the water.
Entailed: There is a boat on the water.
Contradiction: A family sings songs around a campfire.
Contradiction: Green sunglasses and a pink swimsuit is something that isn't being worn
Contradiction: My sister had to have a computer when she went to college.  
Contradiction: Service is not available in the Pyrenees.
Contradiction: I'm not sure how to solve that issue.