メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.337462220359 43.1031307250633, 141.337864210942 43.1029220365112, 141.338143944012 43.103332593817, 141.338248227933 43.1035297818508, 141.33850472212 43.103999721209, 141.337893488614 43.1042599084257, 141.3376787093 43.1039865865678, 141.337090560157 43.1033068106116, 141.33734672229 43.1031846578542, 141.337462220359 43.1031307250633)) ^^http://www.opengis.net/ont/geosparql#wktLiteral