メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.129090024087 34.6504445586823, 135.128377632293 34.6506678224444, 135.128230556074 34.6504028432729, 135.128395138395 34.6502169637074, 135.128692182275 34.6499085179049, 135.128917284257 34.6500625544578, 135.129090024087 34.6504445586823)) ^^http://www.opengis.net/ont/geosparql#wktLiteral