メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.430262650965 43.8048234683135, 142.43032873707 43.8048680526705, 142.430445963862 43.8049433751341, 142.430705490429 43.805096195404, 142.430765667288 43.8051370092667, 142.431081320321 43.8053188530499, 142.431136833005 43.8053501096312, 142.431480129326 43.8055739250974, 142.431790810954 43.805776464158, 142.431978751269 43.8058990162309, 142.43213476201 43.8059990108843, 142.432508489131 43.806228767553, 142.431380055924 43.8071755299092, 142.430866043124 43.8068333724403, 142.430351510946 43.8065298543225, 142.429988371768 43.8062984023097, 142.42962183014 43.8060894396369, 142.429310624672 43.8058927135088, 142.429114523767 43.8057666708755, 142.428767111101 43.8055561290346, 142.429904604003 43.8046113992399, 142.430262650965 43.8048234683135)) ^^http://www.opengis.net/ont/geosparql#wktLiteral