メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.01520444916 34.7733403779161, 138.014954145082 34.7733343130089, 138.014242481161 34.7733107783523, 138.014136109142 34.7733072557957, 138.01412914229 34.7734117492421, 138.014110787593 34.7734123803104, 138.014108427625 34.7734439243409, 138.013479774405 34.7734414215253, 138.013521549945 34.7728127743339, 138.013517219542 34.7723697423183, 138.013731992796 34.77236482098, 138.014270558616 34.7723655544615, 138.014731075734 34.772387386073, 138.015250175798 34.7724552298361, 138.01520444916 34.7733403779161)) ^^http://www.opengis.net/ont/geosparql#wktLiteral