{
  "sentences": [
    {
      "text": "试用期有7天哦。",
      "sources": ["K1"]
    },
    {
      "text": "演示模板一共是3份。",
      "sources": ["K2"]
    },
    {
      "text": "这个资料包支持离线打开。",
      "sources": ["K4"]
    },
    {
      "text": "只有显式调用API才能获取新结果。",
      "sources": ["K5"]
    }
  ]
}