メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.254865497675 34.8102442483163, 137.254428579806 34.8105600963413, 137.253609351124 34.8111579433299, 137.253431809281 34.8112482251652, 137.252612344091 34.811631971782, 137.252721466186 34.8114403257213, 137.253062528332 34.8108991872721, 137.253267118823 34.8105384455836, 137.253417170186 34.8102904285707, 137.253676484919 34.8099972553069, 137.25375838718 34.8099183148299, 137.254413666897 34.8093544000161, 137.254509359421 34.809399400042, 137.254946868477 34.8096582359353, 137.255234221686 34.8100524031436, 137.254865497675 34.8102442483163)) ^^http://www.opengis.net/ont/geosparql#wktLiteral