メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.778337367415 35.4439608667365, 136.777169517919 35.444048567594, 136.777169655461 35.4440200128799, 136.777023786441 35.4440313043651, 136.777033744621 35.4440985538984, 136.776943299881 35.4441083339122, 136.776913483922 35.4439116225116, 136.776855934214 35.4439164729336, 136.776838967036 35.4438214552497, 136.776816805399 35.4437239213443, 136.77813808385 35.4435550600218, 136.778141912767 35.443608873748, 136.778290340349 35.4435935388879, 136.778337367415 35.4439608667365)) ^^http://www.opengis.net/ont/geosparql#wktLiteral