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 timber-framed houses are several centuries old.
Contradiction: Norman architecture doesn't hold up well over time, so there are no examples left.