メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.330483667369 43.0799199296882, 141.330351362649 43.0802469500065, 141.330148291199 43.0807315002771, 141.329985937624 43.0811684839624, 141.329933109012 43.081300559018, 141.329587198816 43.0813214044876, 141.329361929879 43.0813333742198, 141.329382652128 43.0808913122977, 141.329408889708 43.0802347212507, 141.329411392079 43.0798944893529, 141.329417647583 43.0795727843126, 141.329932637141 43.0795751729771, 141.330605392601 43.0795945119925, 141.330483667369 43.0799199296882)) ^^http://www.opengis.net/ont/geosparql#wktLiteral