请给我一个经典的英文绕口令，但必须包含苹果（apple）这个词。但这不是普通的绕口令，而是要用苹果（apple）在句尾，以json格式详细描述并包装。
{"title": "绕口令", "content": "<绕口令内容>", "target_word": "apple"}
user
{"title": "绕口令", "content": "I saw a big apple cart and a small apple cart, but the small apple cart had a bigger apple in it. Go get that big apple in the small apple cart.", "target_word": "apple"}
assistant