Text: At the top of a 272-step staircase is the Cathedral Cave, the most breathtaking of the three, with its architectural columns of lofty stalactites and stalagmites.
Entailment: Cathedral Cave is at the top of a 272-step staircase, and it is the most breathtaking of the three, with its architectural columns of lofty stalactites and stalagmites.
Contradiction: At the top of the staircase is only the Lucky Mountain.