メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.42504510084 31.8998901577972, 131.425354240046 31.9004536535145, 131.425384552854 31.9005162623251, 131.425615784442 31.9009398719089, 131.425908103807 31.9014542408426, 131.426750190076 31.902998723241, 131.425007526385 31.9038113310521, 131.423717533668 31.9023004100392, 131.423554253475 31.9020689252674, 131.422953800018 31.9014867838666, 131.422847520705 31.9013830637435, 131.423428443147 31.9009286222717, 131.423703891377 31.9007195226572, 131.424209140982 31.9002457380503, 131.42488146607 31.8995992089012, 131.42504510084 31.8998901577972)) ^^http://www.opengis.net/ont/geosparql#wktLiteral