メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.33795487382 36.7659949994227, 137.337785983992 36.7661413350788, 137.337685826146 36.7660659316475, 137.337704243075 36.7660485857958, 137.337440742252 36.7658410494184, 137.337627738833 36.7656820136935, 137.337638723301 36.765673126445, 137.337748181978 36.7657403498075, 137.33780676955 36.7658046178681, 137.33795487382 36.7659949994227)) ^^http://www.opengis.net/ont/geosparql#wktLiteral