mnli premise: In winter, the gaur, the world's largest wild ox, almost 2 m (6 ft) high at the shoulder, comes out of its hideaway in the Siwalik Hills on the park's southern edge in search of young grass. hypothesis: In winter, the gaur comes out of its hideaway in the Siwalik Hills on the park's southern edge in search of young grass because it is the first area to thaw.