メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.831574489203 35.1156303308123, 136.831316072079 35.1160847093908, 136.830977616367 35.1166826763687, 136.829739512121 35.1167580835472, 136.829640285086 35.115758828165, 136.829553997441 35.1147493249124, 136.829552976843 35.1147374203336, 136.830373924581 35.1146805237493, 136.831170762538 35.1146252458995, 136.831967106259 35.1145755253684, 136.832172419257 35.1145463677317, 136.831844297059 35.1151559129217, 136.831574489203 35.1156303308123)) ^^http://www.opengis.net/ont/geosparql#wktLiteral