メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.359690969035 43.0612074655026, 141.360148213675 43.0612724894122, 141.360500456836 43.0613225593213, 141.36022837426 43.0623023181665, 141.360165817137 43.0625358190431, 141.360113596564 43.0627310706428, 141.359992834435 43.0631821406315, 141.359235692725 43.0630803212475, 141.358875009748 43.0630295480433, 141.358435642711 43.0629677511818, 141.358656909037 43.0620882432336, 141.358906763317 43.0610886936282, 141.359690969035 43.0612074655026)) ^^http://www.opengis.net/ont/geosparql#wktLiteral