メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.187850683391 34.7986252591253, 137.188110310358 34.7989745306971, 137.188028380518 34.7990759605852, 137.187878183123 34.7993238928887, 137.187714337394 34.7995943642211, 137.187413883474 34.7998423235862, 137.187222667482 34.7999325052965, 137.187058762475 34.799988876692, 137.186963051876 34.7996170379073, 137.186826327387 34.7991212543955, 137.186675941351 34.7986029364642, 137.1876867105 34.7983999232039, 137.187850683391 34.7986252591253)) ^^http://www.opengis.net/ont/geosparql#wktLiteral