Task: Explanation
Input (English): Napa or nappa cabbage ("Brassica rapa" subsp. "pekinensis" or "Brassica rapa" Pekinensis Group) is a type of Chinese cabbage originating near the Beijing region of China, and is widely used in East Asian cuisine. Since the 20th Century it is also a widespread crop in Europe, America and Australia. In much of the world, this is the vegetable referred to as "Chinese cabbage". Question: What vegetable originating near the Beijing region of China is used in Haejang-guk? Answer: Napa cabbage
Output (English):  pekinensis or Brassica rapa Pekinensis Group is a type of Chinese cabbage originating near the Beijing region of China, and is widely used in East Asian cuisine.