メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.748343935399 35.4260716892262, 136.747975984965 35.4263360535073, 136.747468593244 35.4267039849628, 136.745355454554 35.4282431089264, 136.745244191674 35.4281561400478, 136.745127342663 35.428051367115, 136.745041846865 35.4279726898358, 136.744936863238 35.4278695789624, 136.744891432338 35.4278208298868, 136.744843541531 35.427765487568, 136.74695885765 35.426228507001, 136.74746789567 35.4258660450271, 136.747840836556 35.4256099381461, 136.748343935399 35.4260716892262)) ^^http://www.opengis.net/ont/geosparql#wktLiteral