メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.052305359426 42.9010174178327, 143.052884275643 42.9010652002497, 143.053189417312 42.9010847244385, 143.053433480512 42.9013882609082, 143.053366677105 42.9017760545123, 143.053296567178 42.9023146658768, 143.052752033393 42.9022707959026, 143.052164870628 42.9022225079121, 143.051660560217 42.9021820783084, 143.051812946518 42.900986260249, 143.052305359426 42.9010174178327)) ^^http://www.opengis.net/ont/geosparql#wktLiteral