メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.189067869209 34.8040113106411, 137.189149899773 34.8042704683242, 137.189395983851 34.8050141360131, 137.189491683416 34.8052958277889, 137.1896284589 34.8059268325061, 137.188767876471 34.8061523663452, 137.188207313316 34.8042706475376, 137.188179972087 34.8041805053913, 137.187797165494 34.8029410531744, 137.188630403826 34.8027606029606, 137.188780781239 34.8031775037308, 137.189067869209 34.8040113106411)) ^^http://www.opengis.net/ont/geosparql#wktLiteral