メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.824481351385 37.444855491735, 138.82454795144 37.4452689587838, 138.824548040138 37.4452896544562, 138.824745627217 37.4467549037007, 138.8242205777 37.4468028216978, 138.823585340617 37.4468614562681, 138.822528705895 37.4469367365647, 138.821971162174 37.4469693857716, 138.822008275694 37.4465452153536, 138.822037495006 37.4464192677281, 138.822045718535 37.4462039733231, 138.822096776393 37.4460072854183, 138.822192753133 37.4457071333792, 138.822314533836 37.4453707248316, 138.822249215502 37.4451359226406, 138.821833550532 37.4447320047756, 138.822265879885 37.4445652413532, 138.822636450895 37.4444192012812, 138.822970737567 37.4442949438915, 138.823195085641 37.4441826744459, 138.823372938713 37.4441191070571, 138.823635628808 37.4440123625893, 138.824013434137 37.4438564418844, 138.824481351385 37.444855491735)) ^^http://www.opengis.net/ont/geosparql#wktLiteral