メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.822488101483 35.5166570509794, 137.822461458981 35.5166705983112, 137.822233850686 35.516789628809, 137.822214359955 35.5167669849391, 137.821831674098 35.5163229858006, 137.822088897309 35.5161800734367, 137.822346181581 35.5160347666002, 137.823324435791 35.5155325776819, 137.823735204595 35.5160329248985, 137.823389381543 35.5162090385404, 137.822822032964 35.5164873523918, 137.822488101483 35.5166570509794)) ^^http://www.opengis.net/ont/geosparql#wktLiteral