メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.008430646043 34.8900269341097, 137.006266288538 34.8910595074842, 137.005607295346 34.8899522064751, 137.005430164459 34.8896395507173, 137.005448593539 34.8895362577848, 137.005565101734 34.8894333771989, 137.005695714311 34.8893304450505, 137.005753961075 34.8892826317702, 137.005826280121 34.8892507537461, 137.005976212645 34.8891783423427, 137.006047639853 34.8891487176142, 137.006098809901 34.8891138535201, 137.00648993584 34.8887114558794, 137.008430646043 34.8900269341097)) ^^http://www.opengis.net/ont/geosparql#wktLiteral