メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.832386122274 35.4224664520464, 136.831100144513 35.4224691293842, 136.830887657145 35.4225023774525, 136.829789077981 35.4227732264671, 136.829605929629 35.4222026677068, 136.829599390689 35.4220897304728, 136.829835209243 35.4211444691751, 136.831091465655 35.4211833427923, 136.832505911439 35.4212123559588, 136.832663316414 35.4224672164885, 136.832386122274 35.4224664520464)) ^^http://www.opengis.net/ont/geosparql#wktLiteral