Premise: At an altitude of more than 640 meters (2,100 feet), this city on the Castilian plateau, Europe's highest capital, is scorching in summer, when wilting residents flee for the coast or cooler northern climes, and freezing in winter, when many Madrilellos bolt for the Sierra Nevada, just a couple hours south, to ski.

Hypothesis: Madrid is located at a height of 640 meters above sea level.
Relation: entailment