メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.826317478807 34.6642491081929, 137.823567363186 34.6634093953007, 137.819784157615 34.6622828280874, 137.819726522264 34.6622740539722, 137.821615797509 34.6580957720813, 137.822226033768 34.6567143431653, 137.820345529904 34.65638252591, 137.820973507701 34.6529939023934, 137.822142393563 34.6534287872821, 137.826689461861 34.654884387719, 137.826930922494 34.6548941765705, 137.827442318986 34.6551215441582, 137.829860448196 34.6562392692637, 137.828685001086 34.65874635787, 137.828270356771 34.6596270018849, 137.827132643168 34.6622246971622, 137.826317478807 34.6642491081929)) ^^http://www.opengis.net/ont/geosparql#wktLiteral