Anchor: If you are making a long rail journey, don't rely on the generally dreary dining-car service.
Entailed: It is best not to partake in the dining-car service. 
Contradiction: The dining-car offers scrumptious meals. 
Contradiction: A boy was in a snowball fight with a reindeer.
Contradiction: It is tough to represent the group.
Contradiction: A child jumps on a bug.
Contradiction: The kid plays at the park.