[API-users] Why is the key of organismID a URI?

Hi, I just noticed in the response of the occurrence search API, that the key for "organismID" is "http://unknown.org/organismID". It is the only key that is returned as a URI. What is the reasoning behind this (datasetID, gbifID, etc. are all normal)? Is this a bug? "dynamicProperties": "{\"device_info_serial\":858}", "georeferenceProtocol": "doi:10.1080/13658810412331280211", *"http://unknown.org/organismID <http://unknown.org/organismID>": "L907004",* "georeferenceVerificationStatus": "unverified", "samplingEffort": "{\"secondsSinceLastOccurrence\":1806}", http://api.gbif.org/v1/occurrence/search?datasetKey=83e20573-f7dd-4852-9159-... Cheers, Peter