メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.39108286316 43.0810371997033, 141.391356046831 43.0813910389762, 141.391388010365 43.0814310856795, 141.391573913952 43.0816666080691, 141.391651986222 43.081771211514, 141.391207259676 43.08195121874, 141.39083675393 43.0820928207654, 141.390378207741 43.0822658997966, 141.390052504954 43.0824005920656, 141.389631496089 43.0825579850608, 141.38936674333 43.0822259365446, 141.389071477415 43.0818397159629, 141.389057049296 43.0818217434483, 141.388842923409 43.0815539345534, 141.388488452302 43.0810935607124, 141.390515857985 43.0802968710398, 141.390825185466 43.0806931105046, 141.39108286316 43.0810371997033)) ^^http://www.opengis.net/ont/geosparql#wktLiteral