メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.375170239484 43.0795560614078, 141.375540671497 43.0796039011079, 141.376178689608 43.0796721378914, 141.376228819113 43.0798709888797, 141.376436229773 43.0806137675496, 141.375706193466 43.080720370619, 141.374900363685 43.0805910704172, 141.374823987861 43.0808872743128, 141.374388248898 43.0807022837217, 141.374007635357 43.0805406406326, 141.374692152293 43.0798181115824, 141.374718663883 43.0796612689441, 141.374807476645 43.0796702467529, 141.374838253017 43.0795170240099, 141.37493071743 43.0795256074287, 141.375170239484 43.0795560614078)) ^^http://www.opengis.net/ont/geosparql#wktLiteral