メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.993480630972 43.5552475348281, 144.993652079627 43.5551096003293, 144.99411217497 43.5553788036587, 144.994232136181 43.5554526380728, 144.994244669949 43.5554603539507, 144.993397316774 43.5561166695389, 144.992866882073 43.5557591814533, 144.99290224301 43.5557202536263, 144.992520557762 43.5554743029781, 144.992448135701 43.5554252710874, 144.993004152201 43.5549580845559, 144.993480630972 43.5552475348281)) ^^http://www.opengis.net/ont/geosparql#wktLiteral