メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.233689122188 35.0732851388371, 135.231932792057 35.0729406483033, 135.232512439516 35.0719163156291, 135.232610256051 35.0717517111717, 135.233802497041 35.0719644728166, 135.234196719947 35.0721061197849, 135.233689122188 35.0732851388371)) ^^http://www.opengis.net/ont/geosparql#wktLiteral