メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.901987657535 35.3548122217, 134.894933373921 35.3520723607833, 134.894583323135 35.3470675185955, 134.901364502813 35.3466778653149, 134.901987657535 35.3548122217)) ^^http://www.opengis.net/ont/geosparql#wktLiteral