メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.760012057247 43.2019271582028, 141.759750946827 43.202186535856, 141.759487453081 43.2024790976814, 141.758567489718 43.2020103536051, 141.758842643039 43.2017207268543, 141.759135623245 43.2013954500432, 141.760092341261 43.2018474685751, 141.760012057247 43.2019271582028)) ^^http://www.opengis.net/ont/geosparql#wktLiteral