メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.345778355208 43.7627381284501, 142.345757883879 43.7627541614999, 142.345248303172 43.7631522069826, 142.345232165479 43.7631632604698, 142.343629517188 43.7626645499541, 142.343914053901 43.7621775154888, 142.344263852408 43.761617203594, 142.345152915523 43.7619072354684, 142.345451282372 43.7620346503521, 142.345735811137 43.7621609168487, 142.346039199805 43.7623157351432, 142.346217708235 43.7624318933365, 142.345778355208 43.7627381284501)) ^^http://www.opengis.net/ont/geosparql#wktLiteral