请列出阿里巴巴所有在美国的子公司的名称和业务领域，格式要求：用json格式列出每个子公司的名称和业务领域，并且每个业务领域用英文描述。
user
```json
[
    {
        "name": "Alibaba Cloud",
        "business_area": "Cloud computing services"
    },
    {
        "name": "Ant Financial Services Group",
        "business_area": "FinTech and digital payment solutions"
    },
    {
        "name": "Lazada Group",
        "business_area": "E-commerce and online retail"
    },
    {
        "name": "Alibaba U.S. Holdings Inc.",
        "business_area": "Investment and strategic acquisitions"
    },
    {
        "name": "11 Main Inc.",
        "business_area": "Online marketplace for boutique shops"
    }
]
```
assistant