{
    "user_id": {
        "$uuid": "079e0f1ac4403d7cb0e7de160f748e35"
    }, 
    "_id": {
        "$oid": "5639043a7d65cb39ee9a3ddc"
    }, 
    "data": {
        "confidence": "high", 
        "cycling": false, 
        "unknown": false, 
        "ts": 1446575026.229393, 
        "walking": false, 
        "running": false, 
        "automotive": false, 
        "stationary": false
    }, 
    "metadata": {
        "write_ts": 1446575026.229393, 
        "plugin": null, 
        "time_zone": "America/Los_Angeles", 
        "filter": "distance", 
        "platform": "ios", 
        "key": "background/motion_activity", 
        "read_ts": 0, 
        "type": "sensor-data"
    }
}
Check in the data file for the activity with nothing true
Check in the data file for the activity with nothing true
