メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.706321407037 35.3698383907452, 136.706361219933 35.3704709927553, 136.707029011548 35.3709298754972, 136.707037345821 35.3712403223266, 136.705729538054 35.3703516031471, 136.702213720244 35.3679390904058, 136.702375445861 35.3679300680246, 136.706190749071 35.3677646890569, 136.706321407037 35.3698383907452)) ^^http://www.opengis.net/ont/geosparql#wktLiteral