メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.362623622556 43.0713917535405, 141.362487415216 43.0719556548904, 141.361614290858 43.0718328387542, 141.361391496305 43.0718024852776, 141.361068102116 43.0717566514457, 141.361094763057 43.0716643051805, 141.36134357667 43.0705978599989, 141.362754204604 43.0707720371787, 141.363179299583 43.0708166143593, 141.3630203047 43.0714377286735, 141.362623622556 43.0713917535405)) ^^http://www.opengis.net/ont/geosparql#wktLiteral