メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.053012555164 42.9161575040494, 143.052924717004 42.9161503827538, 143.052203808296 42.9160922032368, 143.051513088081 42.9160446390046, 143.051420193024 42.9160387474667, 143.051421226946 42.9160298790539, 143.051606907519 42.9146163094795, 143.051673767024 42.9146216789704, 143.053179707303 42.9147420218142, 143.053012555164 42.9161575040494)) ^^http://www.opengis.net/ont/geosparql#wktLiteral