メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.402804400565 43.7411859994785, 142.404160653746 43.7411150574105, 142.404727564352 43.7410950850458, 142.404791713211 43.7413178116467, 142.405833242017 43.7412756976794, 142.406002625483 43.7413834123526, 142.406029562232 43.7415562601365, 142.406094407735 43.7420478927635, 142.405384826368 43.7420916566233, 142.403739523184 43.742195099702, 142.402046801555 43.7422799465415, 142.402003680093 43.7419918803772, 142.401987352309 43.7418151848268, 142.401943700697 43.7413158218113, 142.401877360406 43.7408144299462, 142.401872938529 43.7407720144059, 142.40349534988 43.7406779993902, 142.402804400565 43.7411859994785)) ^^http://www.opengis.net/ont/geosparql#wktLiteral