メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.785409796914 35.4183635409176, 136.785423860161 35.4186290318026, 136.783959632424 35.4186586040641, 136.780706264841 35.4187900296472, 136.780691770495 35.4185549937166, 136.780680343633 35.4183352836029, 136.783147362752 35.4182515869399, 136.785396825748 35.4181675572842, 136.785409796914 35.4183635409176)) ^^http://www.opengis.net/ont/geosparql#wktLiteral