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Restaurants are classified or distinguished in many different ways. The primary factors are usually the food itself ( , seafood, steak); the cuisine ( , Chinese, Japanese, Indian, French, Mexican, Thai) or the style of offering ( , a sushi train, a tastet restaurant, a buffet restaurant or a yum cha restaurant). Beyond this, restaurants may differentiate themselves on factors including speed (see fast food), formality, location, cost, service, or novelty themes (such as automated restaurants).