メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.760940376758 43.2023498623896, 141.760670970309 43.2026552009468, 141.760368269558 43.2029760808567, 141.759436448719 43.2025216387268, 141.759487453081 43.2024790976814, 141.759750946827 43.202186535856, 141.760012057247 43.2019271582028, 141.760505273262 43.2021683839904, 141.760532734865 43.2021485277618, 141.760940376758 43.2023498623896)) ^^http://www.opengis.net/ont/geosparql#wktLiteral