请回答这个问题，并以JSON形式输出：英语最后一道改错题，指出下面这句话的语法错误并改正："They waters are beautiful."
user
{
  "original_sentence": "They waters are beautiful.",
  "error": "Incorrect use of plural 'waters'",
  "correction": "The water is beautiful.",
  "explanation": "The word 'waters' is used incorrectly because 'water' is not countable in this context. The correct form should be 'the water'."
}
assistant