//Example 27 - Create an Observation entity, which links to an existing Sensor entity (whose id is 1), an existing FeatureOfInterest entity (whose id is 2).

//POST /v1.0/Observations HTTP/1.1

//Host: example.org

//Content-Type: application/json

{
    "Datastream": {
        "@iot.id": 1
    },
    "phenomenonTime": "2013-04-18T16: 15:00-07: 00",
    "result": 124,
    "FeatureOfInterest": {
        "@iot.id": 2
    }
}