メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.048951463923 42.8999621442922, 143.048905716674 42.9003381140201, 143.04885443127 42.9007593463202, 143.048456968176 42.900731591544, 143.048306876493 42.9007211019606, 143.047713726627 42.9006707234446, 143.04681256075 42.8995796511104, 143.046801283218 42.8995655926173, 143.047585789907 42.8996339857564, 143.04765776287 42.8996402368789, 143.047638087364 42.8996166715764, 143.047747108533 42.8995806052188, 143.048071742311 42.8994731966722, 143.049004700422 42.899529012066, 143.048997990817 42.8995798393099, 143.048951463923 42.8999621442922)) ^^http://www.opengis.net/ont/geosparql#wktLiteral