メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.879445013444 43.0113460011405, 142.879046930594 43.0116762715041, 142.878991433471 43.0117222906217, 142.877935270269 43.0111163538852, 142.878034447 43.0110305721413, 142.878418340882 43.0106995381451, 142.879242744248 43.0112186198965, 142.879416992003 43.0113283621921, 142.879445013444 43.0113460011405)) ^^http://www.opengis.net/ont/geosparql#wktLiteral