メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.864465489942 35.1582146425664, 136.864454834582 35.1587606902852, 136.864455826164 35.1590495758185, 136.864444128105 35.1596050580032, 136.864229007328 35.1595949433041, 136.864216534811 35.1595937150526, 136.863791550668 35.1593348275646, 136.863729745885 35.1592877703249, 136.863379074198 35.1591667484555, 136.863237449286 35.1589534292764, 136.863037907767 35.1586510885781, 136.862627753557 35.1580669432181, 136.862546042583 35.1579487067879, 136.863849745598 35.1579356322455, 136.864467890833 35.1579299913934, 136.864465489942 35.1582146425664)) ^^http://www.opengis.net/ont/geosparql#wktLiteral