メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.593841233198 35.3888736660063, 136.591616914839 35.3888616397593, 136.591615847378 35.3885258767398, 136.591613550311 35.3881451099465, 136.591625114172 35.386745515972, 136.594354390583 35.3867378378141, 136.594388712417 35.3868154616587, 136.593948971365 35.3883918797513, 136.593841233198 35.3888736660063)) ^^http://www.opengis.net/ont/geosparql#wktLiteral