メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.890403535965 35.2459961063235, 136.891427054732 35.2460020416204, 136.89142804218 35.2459895790722, 136.89244089638 35.2459889326068, 136.892438343682 35.2475417611243, 136.891434367848 35.2475524967895, 136.890704370435 35.2475497681831, 136.89065463933 35.2475763450599, 136.890563151993 35.2475881068623, 136.890128026113 35.247606262632, 136.890129859317 35.2470705578246, 136.889978268747 35.247067110328, 136.889983322771 35.245854012997, 136.890336376943 35.2457853866702, 136.89038752141 35.2457777572463, 136.890403535965 35.2459961063235)) ^^http://www.opengis.net/ont/geosparql#wktLiteral