メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.884594070306 43.8257031509953, 143.884485107644 43.8257960209583, 143.884342142126 43.8258887257658, 143.884163050919 43.8259819320292, 143.882871678489 43.8263615258535, 143.882317820985 43.8265244612298, 143.881275745902 43.8268288535837, 143.881305350371 43.8266036723328, 143.881425378007 43.8256906532563, 143.881521842955 43.8247973259965, 143.884697453265 43.8250005153701, 143.885319962536 43.8250403186009, 143.884594070306 43.8257031509953)) ^^http://www.opengis.net/ont/geosparql#wktLiteral