メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.761355513621 43.2033960797043, 141.761073118802 43.2036962309434, 141.76082315907 43.2039612150692, 141.759890263651 43.2034886979528, 141.760124677956 43.2032202735581, 141.760368269558 43.2029760808567, 141.760640144566 43.2030963094322, 141.760685427988 43.2030659096316, 141.761036433843 43.2032388608939, 141.761055310657 43.2032191073712, 141.761290674323 43.2033340175075, 141.761374643269 43.2033750129143, 141.761355513621 43.2033960797043)) ^^http://www.opengis.net/ont/geosparql#wktLiteral