メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.42889522569 31.910635545088, 131.42934158245 31.9106806283458, 131.429531983086 31.911419529228, 131.429713134098 31.9121317600526, 131.429908273911 31.9129025704027, 131.428685798201 31.9129871257773, 131.427593072269 31.9130763818168, 131.427580588437 31.9125154654825, 131.427574473675 31.9122407171003, 131.427583577396 31.9115818864532, 131.427599234791 31.9112784358891, 131.427616903604 31.9104974033919, 131.428366885287 31.9105725540324, 131.42889522569 31.910635545088)) ^^http://www.opengis.net/ont/geosparql#wktLiteral