メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.874852866686 35.1184715334608, 136.874659761245 35.1184697912943, 136.872774656703 35.1184309259546, 136.872787782385 35.1178693048206, 136.872790108879 35.1174548302519, 136.872792388669 35.1170468344348, 136.87279678366 35.1168407317668, 136.872801674992 35.1166101244012, 136.873449579542 35.1166299568247, 136.874905637817 35.1166603545221, 136.87489017661 35.1171908508405, 136.874852866686 35.1184715334608)) ^^http://www.opengis.net/ont/geosparql#wktLiteral