メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.777092405923 35.3781862228375, 136.777103107612 35.3781869615631, 136.778093002194 35.3782172123781, 136.777981693076 35.380257888725, 136.777029235668 35.3797333992124, 136.777027949623 35.3797684649553, 136.776041154105 35.3797335704081, 136.776077915252 35.3792166507516, 136.776148888818 35.3781402690896, 136.776871761873 35.3781712806288, 136.777092405923 35.3781862228375)) ^^http://www.opengis.net/ont/geosparql#wktLiteral