メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.377212683984 43.7355641850338, 142.377299724745 43.7355966825049, 142.378086633363 43.7358153350761, 142.377451279209 43.7369324616192, 142.376725071956 43.7381739237854, 142.376201090901 43.7380181038452, 142.37587582317 43.7379213812734, 142.375580300794 43.7378335031858, 142.374912216429 43.7376347969361, 142.374986006028 43.7375110043945, 142.375577074829 43.7363794715085, 142.376235184493 43.7352891292617, 142.377212683984 43.7355641850338)) ^^http://www.opengis.net/ont/geosparql#wktLiteral