给定一个包含英文文本的字符串，使用GPT模型生成一句话的概括描述。
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"The novel follows the story of a young boy named Holden Caulfield, who flunked out of his prep school and goes on a journey of self-discovery in New York City."
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Holden Caulfield, a young boy who failed his prep school, embarks on a journey of self-discovery in New York City in this novel.