メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.107635402393 37.8319538882047, 139.109005606914 37.8321250501664, 139.109479736044 37.8321801822029, 139.109420462345 37.8324783905816, 139.109349627516 37.832822412681, 139.109339590557 37.8328700494368, 139.109314922127 37.8330271515861, 139.109196401294 37.833535576149, 139.108593519582 37.8334530935056, 139.107985332392 37.8333837288135, 139.107383674732 37.8333039078386, 139.106725992056 37.8332215591795, 139.105778758138 37.8331108354099, 139.105429285589 37.8330699837503, 139.105509058565 37.8327474570012, 139.105520194183 37.832690763073, 139.105564271484 37.8324663053766, 139.10557473212 37.8324159923759, 139.105717594949 37.8317283661584, 139.107635402393 37.8319538882047)) ^^http://www.opengis.net/ont/geosparql#wktLiteral