Anchor: According to the policy, a system must be demonstrated before the department will commit to production.
Entailed: Policy dictates that systems be demonstrated before production begins.
Contradiction: The department will commit to productions before demonstrations are done on a system.
Contradiction: If the answer is yes then we can go ahead and trash Earth. 
Contradiction: The girl is dancing on stage.
Contradiction: A young person is playing soccer
Contradiction: A child is sledding.