メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.196633385418 35.3599953966612, 137.198267892524 35.3607795943102, 137.198132098029 35.3609690662784, 137.197919264364 35.3612625725582, 137.19765433163 35.3616369372209, 137.196015368725 35.3608609775987, 137.194688126647 35.3602139482377, 137.195291183175 35.3593442937599, 137.196633385418 35.3599953966612)) ^^http://www.opengis.net/ont/geosparql#wktLiteral