メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.370060976901 43.7304118738578, 142.370957749906 43.7306851074123, 142.369931237949 43.7312789008678, 142.370944106967 43.7315675700256, 142.370907796194 43.7316143190393, 142.37053791135 43.7322290791717, 142.370287690684 43.7326738368719, 142.369864670241 43.7325529970572, 142.369339383461 43.7323918462212, 142.368830371585 43.7322390962937, 142.368452689465 43.7321227212969, 142.368721897679 43.7316684015752, 142.3690763551 43.7310364164602, 142.369503303169 43.7302438995859, 142.370060976901 43.7304118738578)) ^^http://www.opengis.net/ont/geosparql#wktLiteral