メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.347329698391 43.7551194295386, 142.346702435183 43.755594671558, 142.346207090824 43.7559724733004, 142.345967590001 43.7561754839068, 142.345959167936 43.7561599317825, 142.34329249049 43.7554867904202, 142.343599994979 43.7549190801526, 142.343711535473 43.7547131575385, 142.343936297927 43.7542981988614, 142.344156971227 43.7538907851267, 142.344185039882 43.7538389531356, 142.344660550367 43.7532742269652, 142.347329698391 43.7551194295386)) ^^http://www.opengis.net/ont/geosparql#wktLiteral