メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.903822139356 43.7956947484087, 143.904730955804 43.7966421346371, 143.905643126738 43.7975551667454, 143.906636346156 43.7985754122202, 143.906736668109 43.7986783982876, 143.906431526774 43.7988433660396, 143.905997285837 43.7990512901244, 143.905240737535 43.7994357806783, 143.904146711232 43.7983085311535, 143.903259772607 43.7973947897471, 143.902338413573 43.7964569245118, 143.901270028237 43.7953402120377, 143.902011115259 43.7949451223718, 143.90255472114 43.7946552916896, 143.903318880636 43.7951671816785, 143.903822139356 43.7956947484087)) ^^http://www.opengis.net/ont/geosparql#wktLiteral