メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.78706774076 34.6444903104105, 135.787087642302 34.6448850433722, 135.787088314252 34.6449815367209, 135.786782796791 34.6450124155299, 135.786751407946 34.6444852506316, 135.786735959285 34.6441247543994, 135.787054994912 34.6441388342289, 135.78706774076 34.6444903104105)) ^^http://www.opengis.net/ont/geosparql#wktLiteral