メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.456418410209 43.0368787973122, 144.45656632225 43.0372498718957, 144.456758689401 43.0377483637992, 144.457095787857 43.0386679931115, 144.455762097255 43.0390021135922, 144.455341602155 43.038109054601, 144.455106873347 43.0376106733249, 144.455089031357 43.0375728999626, 144.455059255006 43.0375820538627, 144.455025137047 43.0375128772373, 144.454885964975 43.037230244563, 144.454807381737 43.0370652255784, 144.456353038562 43.0366813149191, 144.456418410209 43.0368787973122)) ^^http://www.opengis.net/ont/geosparql#wktLiteral