メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.893431369761 35.2445420080576, 136.891965884927 35.2445676200717, 136.891389592625 35.2445701780433, 136.890389895205 35.2445814109905, 136.890409952873 35.24318340163, 136.890401456503 35.2429190110859, 136.891932723281 35.2429089909038, 136.892212659923 35.2428999809134, 136.893416315243 35.2430802552937, 136.893431369761 35.2445420080576)) ^^http://www.opengis.net/ont/geosparql#wktLiteral