メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.813593767298 35.3236127997755, 136.813361067821 35.3237105058199, 136.813124572461 35.323785945613, 136.813054613483 35.323849265094, 136.812923011251 35.3235919709719, 136.812354441603 35.3237946839839, 136.812400435785 35.3236897439378, 136.812794590835 35.3229105867215, 136.812877085768 35.3229439977608, 136.812836272516 35.3230184583313, 136.81291881529 35.3230206715668, 136.813190259668 35.3229199107784, 136.813593767298 35.3236127997755)) ^^http://www.opengis.net/ont/geosparql#wktLiteral