メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.955049669243 44.5900383791274, 142.954976592197 44.5900935296736, 142.954625889661 44.5903471906566, 142.954242554532 44.5906243930591, 142.953274250269 44.5912958365967, 142.952041419602 44.5919862623961, 142.950991200353 44.5913497251896, 142.950140777015 44.5908139746198, 142.952322808535 44.5890756115008, 142.952891814261 44.5893820038884, 142.953206546215 44.5895471589681, 142.954288923334 44.5885435740389, 142.955905892548 44.5894747999811, 142.955381369542 44.5897879281564, 142.955049669243 44.5900383791274)) ^^http://www.opengis.net/ont/geosparql#wktLiteral