メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.989018136423 43.5463840828077, 144.989414576325 43.5466373208109, 144.988822806662 43.5471251439081, 144.988421155165 43.5468679505521, 144.988358428568 43.5468277564879, 144.988007622908 43.5466086851026, 144.988055605843 43.5465710042449, 144.988000937158 43.5465379992662, 144.988737370971 43.5459699232258, 144.989129242355 43.546229037653, 144.989175911029 43.5462562223262, 144.989018136423 43.5463840828077)) ^^http://www.opengis.net/ont/geosparql#wktLiteral