メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.681697393102 35.3139769782567, 136.680632520966 35.3139792817135, 136.680026386284 35.3139774245029, 136.678945030303 35.313970563882, 136.678929480358 35.3139705016049, 136.67891233395 35.3124213738754, 136.679709675619 35.3124278731257, 136.680599271272 35.3124305806654, 136.681673217935 35.3124011281483, 136.681688968001 35.313718849659, 136.681697393102 35.3139769782567)) ^^http://www.opengis.net/ont/geosparql#wktLiteral