メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.325651082112 43.1096535961769, 141.326377335662 43.1092587438334, 141.327070036842 43.109977813216, 141.327455412192 43.1103630846043, 141.327716105546 43.1106455852834, 141.327496501896 43.1107587974166, 141.327050325193 43.1109888195224, 141.327003986457 43.1110127087179, 141.326639172889 43.1112131456711, 141.326266193935 43.1114011388973, 141.32564918577 43.1107613786239, 141.324947087158 43.1100294959407, 141.325292943913 43.1098446615264, 141.325651082112 43.1096535961769)) ^^http://www.opengis.net/ont/geosparql#wktLiteral