メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.098908849879 37.891993471169, 139.099435348639 37.8920144473465, 139.100044480134 37.8920388029619, 139.099834579112 37.8923769115481, 139.099686447995 37.8925827896175, 139.099457924848 37.8928974807929, 139.099215445567 37.8931892950573, 139.098780059864 37.8929690667394, 139.098425124562 37.8927893964208, 139.097804971213 37.8924904152709, 139.097626963886 37.8924023412136, 139.097889253671 37.89220926171, 139.098120622395 37.891943692184, 139.098908849879 37.891993471169)) ^^http://www.opengis.net/ont/geosparql#wktLiteral