"2009-07-06" . . "recommended" . "The ellipsoid, geodetic datum, or spatial reference system (SRS) upon which coordinates given in verbatimLatitude and verbatimLongitude, or verbatimCoordinates are based. Recommended best practice is use the EPSG code as a controlled vocabulary to provide an SRS, if known. Otherwise use a controlled vocabulary for the name or code of the geodetic datum, if known. Otherwise use a controlled vocabulary for the name or code of the ellipsoid, if known. If none of these is known, use the value \"unknown\"."@en . "Examples: \"EPSG:4326\", \"WGS84\", \"NAD27\", \"Campo Inchauspe\", \"European 1950\", \"Clarke 1866\""@en . "2009-07-06" . "Verbatim SRS"@en . . "not in ABCD" . . .