メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.290518863573 42.2936652209698, 143.287330465449 42.2945229406938, 143.286686653069 42.2946815323766, 143.284466389057 42.2943388991949, 143.283420228563 42.2941102979132, 143.28301767396 42.2931003498249, 143.289395477175 42.2914012320915, 143.290518863573 42.2936652209698)) ^^http://www.opengis.net/ont/geosparql#wktLiteral