メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.038553015763 43.7416672587529, 142.039311856228 43.7419131142827, 142.041288420402 43.7425424777442, 142.040420286226 43.7439907627858, 142.039922568675 43.7448521508586, 142.039361502014 43.7457668287746, 142.03855012753 43.7471374637261, 142.037769222369 43.7483017341437, 142.037124560604 43.7493620889617, 142.03577429695 43.7489484630613, 142.033267630435 43.7482397745807, 142.031448194509 43.7476252733477, 142.030749971603 43.747370510299, 142.032082665706 43.7451120115929, 142.032985314727 43.7436016859759, 142.034016850279 43.7418747581278, 142.034895573258 43.7405107552392, 142.038002944557 43.7414871851465, 142.038270649341 43.7415757761652, 142.038553015763 43.7416672587529)) ^^http://www.opengis.net/ont/geosparql#wktLiteral