メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.785428592153 35.4188113282628, 136.785438648529 35.4190323716167, 136.780719883152 35.4192089638972, 136.780714741559 35.4189790630579, 136.780706264841 35.4187900296472, 136.783959632424 35.4186586040641, 136.785423860161 35.4186290318026, 136.785428592153 35.4188113282628)) ^^http://www.opengis.net/ont/geosparql#wktLiteral