メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.402029065914 43.8110697460949, 142.403160717337 43.8118803254222, 142.40269938706 43.8122077606796, 142.402281475976 43.8125036151823, 142.401839089458 43.8128034558314, 142.401426655152 43.8131130993155, 142.401189199159 43.8132856841359, 142.400993792048 43.81341979803, 142.400635698942 43.8137254285122, 142.40002828158 43.813269482097, 142.399056229956 43.8125666377827, 142.39941821492 43.8122967646194, 142.399845626312 43.8119900618893, 142.400719484405 43.8113766433945, 142.401578311284 43.8107445329943, 142.402029065914 43.8110697460949)) ^^http://www.opengis.net/ont/geosparql#wktLiteral