メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.38140660659 42.9936255488809, 144.381490763347 42.9936378334606, 144.381466226522 42.9937095337319, 144.382152685836 42.9938352052575, 144.381834579877 42.9948140626865, 144.381178425086 42.9946896511717, 144.381163908998 42.9947297280956, 144.381066575436 42.9947131878059, 144.380279398619 42.9945731398505, 144.380635808237 42.993487730675, 144.38140660659 42.9936255488809)) ^^http://www.opengis.net/ont/geosparql#wktLiteral