Nuri Bilge Ceylan loves snow. The depths of winter, people in thick coats, frozen taps, the sense that these long, bitterly cold seasons in mountain regions will never end. This is all working material for the Turkish master whose Winter Sleep won the Palme d’Or in 2014. “What am I doing here?” is the regular moan from Samet (Deniz Celiloglu), the art teacher in the village school in About Dry Grasses.