Text: The zoo lies on a hillside, with visitors needing to climb some inclines to the upper enclosures (wheelchairs and strollers are available).
Entailment: Wheelchairs and strollers are available, as the zoo is on a hillside and visitors need to climb inclines to the upper enclosures.
Contradiction: The zoo lies on a flat piece of land, requiring no climbing on the part of the visitor.