Anchor: No horned helmet was found, but the discovery is complicating--perhaps overturning--theories about the settlement of North America.
Entailed: A horned helmet was not found in North America. 
Contradiction: A horned helmet was found America. 
Contradiction: The perenial was very expensive.
Contradiction: He has not lasted this long before in the army.
Contradiction: A player practicing to bowl
Contradiction: A couple sit at a restaurant table.