メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.68973857937 35.3163390764373, 136.689716883178 35.3163612454664, 136.689260150073 35.3168095965958, 136.689230359814 35.3168348318668, 136.68782474416 35.3157554361371, 136.687861844092 35.3157219198886, 136.688293528412 35.3153325605433, 136.688426764605 35.3154389290372, 136.688578048919 35.3154353675641, 136.68973857937 35.3163390764373)) ^^http://www.opengis.net/ont/geosparql#wktLiteral