メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.20794954432 34.8419248229518, 137.206897404098 34.8423308360966, 137.20676056149 34.8419364807276, 137.206746819296 34.8417674567861, 137.206760324316 34.8414068585497, 137.206869600128 34.8412828690467, 137.207074463974 34.8409898198719, 137.207962746285 34.8409219156883, 137.208044760089 34.8409556940471, 137.208154098383 34.8409669260617, 137.208372749575 34.8409443155041, 137.208249939591 34.8413500254897, 137.208140681616 34.8415078220979, 137.208072422644 34.8416656049059, 137.20794954432 34.8419248229518)) ^^http://www.opengis.net/ont/geosparql#wktLiteral