メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.422015855396 34.7514138018187, 137.422652587356 34.7514213267871, 137.422649972235 34.7514382353828, 137.422603991798 34.7524109630969, 137.422538404198 34.7539727989649, 137.421917917672 34.7539535468088, 137.420639310485 34.7539102007557, 137.418998854444 34.7538691532275, 137.41902654918 34.7533421484828, 137.419072154411 34.7522954719174, 137.419057036546 34.7513372421134, 137.420759972201 34.7513794237882, 137.422015855396 34.7514138018187)) ^^http://www.opengis.net/ont/geosparql#wktLiteral