メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.27059386525 44.023306247686, 144.270134498698 44.0234383928277, 144.269516934277 44.023543611939, 144.26894267301 44.0236212826924, 144.269115453673 44.0227406665896, 144.269876223585 44.0227950342925, 144.269860873049 44.0228480135825, 144.270663032613 44.0229330100885, 144.27059386525 44.023306247686)) ^^http://www.opengis.net/ont/geosparql#wktLiteral