メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.438854731089 42.877601113637, 142.439737685602 42.8780257794979, 142.439260744324 42.8784077770708, 142.438788261743 42.8787951099639, 142.437618369579 42.8796935045417, 142.437045379945 42.8793206380278, 142.436466625176 42.8789561468489, 142.438260991687 42.8773155675068, 142.438366359012 42.8773662426095, 142.438854731089 42.877601113637)) ^^http://www.opengis.net/ont/geosparql#wktLiteral