メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.33595349585 43.7539080557547, 142.336417585775 43.754053756308, 142.335778824423 43.7551609748482, 142.335302419027 43.7550155618486, 142.335253092063 43.7550024315586, 142.334527576455 43.7547941620929, 142.334535243144 43.7547800561296, 142.334848509507 43.75425501458, 142.335192815319 43.7536716170184, 142.33552641883 43.7537738924863, 142.33595349585 43.7539080557547)) ^^http://www.opengis.net/ont/geosparql#wktLiteral