メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.352353893225 43.0290932074794, 141.352327495042 43.0292601757219, 141.352244450152 43.0299396196765, 141.350912284967 43.029842934184, 141.350522986837 43.0298161031681, 141.350596051974 43.0291583147084, 141.350598861044 43.0291366043545, 141.350626434491 43.0289748500358, 141.350684718297 43.0284758221949, 141.352423494537 43.028599330238, 141.352353893225 43.0290932074794)) ^^http://www.opengis.net/ont/geosparql#wktLiteral