メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((145.132144309155 43.6584838568881, 145.132594762488 43.6585255393956, 145.132781253418 43.6585364402067, 145.133120395546 43.6585392677153, 145.133114528852 43.6586392670921, 145.133077367706 43.6594450736861, 145.133077181623 43.6595382860987, 145.132053891643 43.659565426018, 145.132050602673 43.6595655090537, 145.131839506697 43.6595708383344, 145.131137531385 43.6595479836395, 145.131141046154 43.6594959297244, 145.131229783824 43.6583991434767, 145.132144309155 43.6584838568881)) ^^http://www.opengis.net/ont/geosparql#wktLiteral