Can I know which photo belongs to which review

[Nana2929]

Thank you for compiling the dataset. Currently the photo metadata looks like:

{
    // string, 22 character unique photo id
    "photo_id": "_nN_DhLXkfwEkwPNxne9hw",
    // string, 22 character business id, maps to business in business.json
    "business_id" : "tnhfDv5Il8EaGSXZGiuQGg",
    // string, the photo caption, if any
    "caption" : "carne asada fries",
    // string, the category the photo belongs to, if any
    "label" : "food"
}

I'd like to know if it is possible to get this metadata for the photo (eg. user_id), so I know which user contributes this photo?