メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.889833140058 36.5581327420789, 139.890020929827 36.5589326166438, 139.889079059002 36.5590760541778, 139.888954477487 36.5590953329353, 139.888172003411 36.5592057029557, 139.888108135348 36.5589427518589, 139.888049565158 36.5587185933553, 139.888035564227 36.5586492794397, 139.887967784003 36.5583559490138, 139.887916685567 36.5579949797805, 139.889030099592 36.557846685561, 139.889491480774 36.557785217648, 139.889735131876 36.557752752029, 139.889833140058 36.5581327420789)) ^^http://www.opengis.net/ont/geosparql#wktLiteral