anchor.diff:              "id": "Boe-Idearium",
               "temperature": {
                 "value": 22.5,
  -              "type": "none"
  +              "type": "Number"
               }
             },
             {
  
positive.code:             "metadata": {
                "crs": {
                  "value": "WGS84",
                  "type": "none"
                }
              }
            }
  
negative.code:              "metadata": {
                 "accuracy": {
                   "value": 2,
                   "type": "Number"
                 },
                 "timestamp": {
                   "value": "2015-06-04T07:20:27.378Z",
  