メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.735405014236 35.0944669391375, 136.734926968003 35.0947287762033, 136.734483552845 35.0938245364158, 136.735487340782 35.0925786645976, 136.736311605556 35.0931523994886, 136.735765457974 35.093788177459, 136.735708554978 35.0939530560283, 136.735547429975 35.0942620095825, 136.735405014236 35.0944669391375)) ^^http://www.opengis.net/ont/geosparql#wktLiteral