メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.824491614366 34.6642283267697, 135.824312664118 34.6642307454762, 135.824351829216 34.6639225949011, 135.824491258835 34.663925048928, 135.824491614366 34.6642283267697)) ^^http://www.opengis.net/ont/geosparql#wktLiteral