メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.391837267104 44.1604151186942, 142.390899292052 44.1602676396146, 142.389568926481 44.1600570622313, 142.390041514595 44.1584762795583, 142.390702592146 44.1582444617172, 142.391077375975 44.1581261496426, 142.391345125276 44.1580550809665, 142.39155189253 44.1580066063934, 142.391688823302 44.158008583341, 142.391852607911 44.1580383893304, 142.392001556143 44.1580832084833, 142.392531448596 44.1582672236902, 142.391837267104 44.1604151186942)) ^^http://www.opengis.net/ont/geosparql#wktLiteral