メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.38023070106 43.8309429039518, 142.3778156802 43.8327283972545, 142.376763798135 43.831966480875, 142.376265771492 43.8316112875254, 142.374598081391 43.8304074715495, 142.376741793234 43.8288329575497, 142.377021118717 43.8286288226556, 142.377301364413 43.8288647945126, 142.38023070106 43.8309429039518)) ^^http://www.opengis.net/ont/geosparql#wktLiteral