メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.289632820225 34.8166949549221, 137.289347256357 34.8176418190636, 137.28903301921 34.8176646606065, 137.288732462068 34.8176987570622, 137.288595806671 34.8176876196696, 137.288295103314 34.8176202951195, 137.287898737088 34.8175417924237, 137.287816753765 34.8175418707736, 137.287502484357 34.8175421706028, 137.287338517708 34.8175423267132, 137.286655131558 34.8174077482272, 137.287022773293 34.8165058882054, 137.289632820225 34.8166949549221)) ^^http://www.opengis.net/ont/geosparql#wktLiteral