メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.107288784253 35.3432454723973, 137.107803958423 35.3433398887227, 137.108531839207 35.3434732824095, 137.108241178335 35.3444870292238, 137.107525366468 35.3443548374258, 137.107010751665 35.3442598571378, 137.105357404226 35.343938153998, 137.105623191659 35.342930315387, 137.107288784253 35.3432454723973)) ^^http://www.opengis.net/ont/geosparql#wktLiteral