メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.882195511699 35.1151098917291, 136.882272066185 35.1155303162709, 136.881036066845 35.1155326160178, 136.88103680129 35.1151122072136, 136.881032358529 35.1147499531931, 136.88102848101 35.1145129080691, 136.882084113908 35.1145124800516, 136.882127230174 35.1147428203689, 136.882195511699 35.1151098917291)) ^^http://www.opengis.net/ont/geosparql#wktLiteral