メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.96797900073 44.5798881823237, 142.967806150536 44.5800395907562, 142.967732053256 44.5801577534143, 142.967588258415 44.5802800470049, 142.967472247483 44.5803580443574, 142.967323930061 44.5804407819369, 142.966864793465 44.580463594469, 142.96575621625 44.5799895870566, 142.965690768072 44.5800714508367, 142.96513291768 44.5797100332409, 142.965079084092 44.5796562677134, 142.96491824206 44.5795079695506, 142.964675345724 44.5793709081573, 142.966013863153 44.5782364167629, 142.967151136589 44.578894453712, 142.968128048069 44.5781167411039, 142.96797900073 44.5798881823237)) ^^http://www.opengis.net/ont/geosparql#wktLiteral