如何使用 GraphAPI 从 Facebook 群组检索照片？

我想使用 GraphAPI 从 Facebook 群组检索照片。基于FB Docs http://developers.facebook.com/docs/reference/api/group/我看不出与照片有任何联系。我想获取照片和上传照片的用户。

图形API：

http://graph.facebook.com/GROUP_ID/?fields=名称，描述 http://graph.facebook.com/GROUP_ID/?fields=name,description,albums

return

{
  "name": "Group name",
  "description": "Group description",
  "id": "GROUP_ID",
  "albums": {
    "data": [
      {
        "id": "GROUP_ALBUM_ID",
        "name": "GROUP_ALBUM_NAME",
        "link": "GROUP_ALBUM_LINK",
        "created": 1352388257,
        "modified": 1352388257,
        "cover_pid": 444427468954616,
        "count": 22
      }
    ],
    "paging": {
      "next": "https://graph.facebook.com/GROUP_ID/albums?limit=25&offset=25"
    }
  }
}

和下一个查询