メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.326196241122 43.1411421633391, 141.326270923553 43.1414764812436, 141.326353247899 43.1418454624692, 141.326437913248 43.1422249427455, 141.32654057755 43.1426848839304, 141.325385389029 43.142831018669, 141.32477762519 43.1429079178332, 141.323874362547 43.1430149955194, 141.32351004004 43.1414709715103, 141.323238141754 43.1402947456874, 141.323953010235 43.1402083831044, 141.324133314807 43.1401865588476, 141.324453128998 43.1401479251885, 141.325923940454 43.139970167688, 141.32601621311 43.1403670811618, 141.326102706324 43.1407396840168, 141.326196241122 43.1411421633391)) ^^http://www.opengis.net/ont/geosparql#wktLiteral