メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.891981161589 43.0190932838386, 142.891275859854 43.0186602014006, 142.891034850096 43.0185080188844, 142.890965048119 43.0184639606415, 142.891009176221 43.0184263685872, 142.891133181175 43.0183185642289, 142.891850218362 43.0176989609806, 142.891963580464 43.017600005814, 142.892052973334 43.0176568944394, 142.892061223757 43.0176621937584, 142.892988101775 43.0182225925101, 142.892936900369 43.0182666948643, 142.892036165273 43.0190461368409, 142.891981161589 43.0190932838386)) ^^http://www.opengis.net/ont/geosparql#wktLiteral