Text: On a stay at one of these lodges, a half day is usually spent in dug-out canoes searching for endangered gharials, a narrow jawed fish-eating crocodile, and their flesh-eating cousins, the huge marsh muggers.
Entailment: During a stay at one of these lodges, usually half a day is spent in canoes searching for narrow jawed fish-eating crocodiles, and their flesh-eating cousins, the big marsh muggers.
Contradiction: Canoeing is prohibited during your stay at one of these lodges.