请使用json格式回答以下问题，并提供英文翻译和解释：中国的首都是哪里？
user
{
  "response": "中国的首都是北京。",
  "translation": "The capital of China is Beijing.",
  "explanation": "北京 (Beijing) is the political, cultural, and educational center of China, known for its rich history and numerous landmarks."
}
assistant