メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.554570750514 40.2816147065816, 140.554577511699 40.2826731514687, 140.554606656453 40.2836835388428, 140.554606146695 40.2838080639992, 140.55113430247 40.2838459726685, 140.551095392062 40.2827267439475, 140.551090374154 40.2816814080956, 140.551072872 40.2806503260247, 140.552653826617 40.2806017823434, 140.552622930742 40.2797945129969, 140.554508687827 40.2797752490851, 140.554549082442 40.2805845296274, 140.554570750514 40.2816147065816)) ^^http://www.opengis.net/ont/geosparql#wktLiteral