メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.339041755153 43.0970592932637, 141.339644370563 43.0971423701719, 141.339567000902 43.0974479645724, 141.339463987069 43.0978390134883, 141.339360974152 43.0982299920518, 141.337862296765 43.09801500363, 141.337970160307 43.0976276516952, 141.338042388811 43.0973003568203, 141.338043111818 43.0972969166101, 141.338140815564 43.096934449603, 141.338832519643 43.0970282985532, 141.339041755153 43.0970592932637)) ^^http://www.opengis.net/ont/geosparql#wktLiteral