メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.457985415858 34.8541813821805, 136.458000273014 34.8542572454152, 136.458026689141 34.8543450393039, 136.457609538466 34.8544771162339, 136.457605633752 34.854467879142, 136.45754240738 34.8543183423344, 136.457476218609 34.8543375361281, 136.457391576554 34.8541479824558, 136.457956146229 34.8539564058199, 136.458006392725 34.8540664347967, 136.458049203503 34.8541760708142, 136.457985415858 34.8541813821805)) ^^http://www.opengis.net/ont/geosparql#wktLiteral