メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.102044561568 37.8807139642708, 139.102878381126 37.8810321018841, 139.103405851306 37.8812248128351, 139.102917377274 37.8821212970348, 139.102780963125 37.8823825869392, 139.102709353218 37.8825045912841, 139.102595568427 37.8826986119629, 139.102250284791 37.8832459193026, 139.102062376832 37.8835318279079, 139.101456935916 37.8833036067842, 139.100659153482 37.8830016062015, 139.09986616576 37.8827042231667, 139.100470408228 37.8816996025086, 139.100567021653 37.8815393191085, 139.10124181482 37.8804156523227, 139.102044561568 37.8807139642708)) ^^http://www.opengis.net/ont/geosparql#wktLiteral