メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.185159778706 35.3944266178047, 137.184103279577 35.3939720401416, 137.184337003824 35.3935717253788, 137.184403928244 35.3923381900057, 137.185551994549 35.3923893005663, 137.185467560991 35.3939266423698, 137.185418001866 35.3940377069648, 137.185159778706 35.3944266178047)) ^^http://www.opengis.net/ont/geosparql#wktLiteral