メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.043881096603 35.1876019500426, 137.041461176552 35.1884614883113, 137.041383263407 35.18848840301, 137.040155621564 35.1889303959837, 137.039312966258 35.1892233695642, 137.039273530466 35.1891629331501, 137.038771103186 35.1881636197814, 137.038588349917 35.1878160252587, 137.040884348924 35.1870248405667, 137.043037805021 35.1862475533264, 137.043881096603 35.1876019500426)) ^^http://www.opengis.net/ont/geosparql#wktLiteral