メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.395864082567 43.0468639400022, 141.395381173228 43.0470574732187, 141.395314300585 43.0469841816197, 141.395302905227 43.0468516648763, 141.395304024343 43.046771004671, 141.3953586822 43.0465360164357, 141.396518880036 43.0461266965419, 141.396988571436 43.0465336822941, 141.396969492499 43.0465404323239, 141.396288556506 43.0467282741413, 141.395864082567 43.0468639400022)) ^^http://www.opengis.net/ont/geosparql#wktLiteral