メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.600969745486 43.3069390386757, 144.598016554348 43.3068896148579, 144.597907366392 43.3064050792977, 144.597493134157 43.304896008298, 144.59997685112 43.3042949718062, 144.600505051826 43.3041686402515, 144.601031146753 43.3055952315644, 144.601039827335 43.3063643908849, 144.600969745486 43.3069390386757)) ^^http://www.opengis.net/ont/geosparql#wktLiteral