Text: The character of the lake changes as you travel along its length; the shape of the valley constantly alters the perspective, a fact that has not been overlooked by generations of painters and photographers.
Entailment: As you travel along its length, the character of the lake changes; the shape of the valley constantly alters the perspective, a fact that has not been overlooked by generations of painters and photographers.
Contradiction: The lake is crystal clear, its character s unchanging, nothing alters the perspective of the observer.