//Example 4 - An example of a Datastream entity:

{
    "@iot.id": 1,
    "@iot.selfLink": "http://example.org/v1.0/Datastreams(1)",
    "Thing@iot.navigationLink": "HistoricalLocations(1)/Thing",
    "Sensor@iot.navigationLink": "Datastreams(1)/Sensor",
    "ObservedProperty@iot.navigationLink": "Datastreams(1)/ObservedProperty",
    "Observations@iot.navigationLink": "Datastreams(1)/Observations",
    "name": "oven temperature",
    "description": "This is a datastream measuring the air temperature in an oven.",
    "unitOfMeasurement": {
        "name": "degree Celsius",
        "symbol": "°C",
        "definition": "http://unitsofmeasure.org/ucum.html#para-30"
    },
    "observationType": "http://www.opengis.net/def/observationType/OGC-OM/2.0/OM_Measurement",
    "observedArea": {
        "type": "Polygon",
        "coordinates": [
            [
                [ 100, 0 ],
                [ 101, 0 ],
                [ 101, 1 ],
                [ 100, 1 ],
                [ 100, 0 ]
            ]
        ]

    },
    "phenomenonTime": "2014-03-01T13:00:00Z/2015-05-11T15:30:00Z",
    "resultTime": "2014-03-01T13:00:00Z/2015-05-11T15:30:00Z"
}