メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.368561224075 39.5413797390775, 140.368140068466 39.5413909974769, 140.367794793571 39.5414315881814, 140.367802887965 39.5413115327223, 140.367867136274 39.5405933778635, 140.368357725613 39.5405551311805, 140.369821047356 39.5405897366932, 140.369514768306 39.5408471226034, 140.369156256996 39.541127310927, 140.368963010354 39.5411437773096, 140.3685549852 39.5411368595571, 140.368561224075 39.5413797390775)) ^^http://www.opengis.net/ont/geosparql#wktLiteral