messages.content: 请提取出句子中的属性词、正向情感(情感词)、负向情感(情感词)、中性情感(情感词)并给出位置，以[[{"type":词1类别, "span":词1名称,"offset":词1位置}], [{"type":词2类别, "span":词2名称,"offset":词2位置}], ...]的格式回答。
messages.role: system
messages.content: 保温效果不错，价格很意外很满意
messages.role: user
messages.content: [[{"type": "属性词", "span": "保温效果", "offset": [0, 4]}, {"type": "正向情感(情感词)", "span": "不错", "offset": [4, 6]}], [{"type": "属性词", "span": "价格", "offset": [7, 9]}, {"type": "正向情感(情感词)", "span": "很意外", "offset": [9, 12]}], [{"type": "属性词", "span": "价格", "offset": [7, 9]}, {"type": "正向情感(情感词)", "span": "很满意", "offset": [12, 15]}]]
messages.role: assistant