メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.225727508614 36.6876691080298, 137.226141462412 36.6876753798038, 137.227093796724 36.6878133178691, 137.226936553582 36.6884834466652, 137.226641805345 36.6884900009468, 137.225685815202 36.6886224192771, 137.224945654261 36.6887312070913, 137.224945615432 36.6886811478794, 137.224958591612 36.6885462462003, 137.224984678745 36.6884387234271, 137.225006080645 36.6883326123948, 137.225014663756 36.688290153189, 137.225074752666 36.6881636761505, 137.225155756468 36.6880076189944, 137.225207997218 36.6878705837781, 137.225223625083 36.6877820757326, 137.225229430822 36.6876794220412, 137.225727508614 36.6876691080298)) ^^http://www.opengis.net/ont/geosparql#wktLiteral