メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.93869413231 37.7987026121528, 140.935332444133 37.7986284857407, 140.93535837442 37.7983437207446, 140.935367786515 37.7980816371388, 140.935402017209 37.797214940317, 140.935443115417 37.7963449391529, 140.935448946977 37.7958776279807, 140.938798119712 37.7959358181218, 140.93869413231 37.7987026121528)) ^^http://www.opengis.net/ont/geosparql#wktLiteral