Text: Its timber-framed houses of the 15th, 16th, and 17th centuries are marvelous examples of sturdy Norman architecture, achieving a pleasing irregularity in the way the plaster is set in oblique forms between the solid oak posts and collar beams supporting the balconies.
Entailment: The old houses are built in the style of Norman architecture.
Contradiction: Norman architecture doesn't hold up well over time, so there are no examples left.