メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.333509432072 43.0668296000315, 141.334333661586 43.0669356505302, 141.334249680716 43.0672479438025, 141.334178982914 43.0675120963906, 141.334037201355 43.0680726097593, 141.333233749691 43.0679615893063, 141.333166221266 43.0679518888487, 141.332895693663 43.0679130274914, 141.332873361477 43.0679098190727, 141.332455521966 43.0678574460891, 141.332573164962 43.0673727663076, 141.332622300297 43.0671784191364, 141.332697315952 43.0669339243401, 141.332759832112 43.0667299783446, 141.333509432072 43.0668296000315)) ^^http://www.opengis.net/ont/geosparql#wktLiteral