Text: The elephant grass along the several rivers in the park is so tall that only from an elephant's back can you spot rhinos, deer, and other creatures, most of which are used to seeing elephants and do not run from them.
Entailment: The elephant grass is so high, you can only see anything in the grass from the height of an elephant's back.
Contradiction: The grass is alway kept at a height of 4 inches.