メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.385047970264 43.1499679866984, 141.385115359239 43.1503458970185, 141.385235355575 43.1509443455441, 141.384149950083 43.1510314591839, 141.383235220748 43.1511061542856, 141.383191364906 43.151110040957, 141.382742708838 43.1511497391013, 141.38263427882 43.1505842953511, 141.382566814477 43.1501923883739, 141.382516632604 43.1498690455423, 141.382990330911 43.1498305923152, 141.384990280079 43.1496516187287, 141.385047970264 43.1499679866984)) ^^http://www.opengis.net/ont/geosparql#wktLiteral