メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.03999945273 35.0070099406002, 137.038602573221 35.008084559158, 137.03821393121 35.007808772456, 137.037588920175 35.0073488433472, 137.037705013202 35.0072883973329, 137.038846351069 35.0067286365844, 137.039195165235 35.0065787082254, 137.039391186791 35.0064489015622, 137.039973123347 35.0060634180359, 137.040635516998 35.0055674406479, 137.041077895676 35.0059233536925, 137.041104339571 35.0060034586902, 137.041143183269 35.0060995644374, 137.03999945273 35.0070099406002)) ^^http://www.opengis.net/ont/geosparql#wktLiteral