メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.44015982286 43.7735608251715, 142.441572673001 43.7734990522684, 142.441652735992 43.7742581136257, 142.441719753663 43.774958213425, 142.441766129499 43.7754345833498, 142.441771931782 43.7756908436315, 142.440917807346 43.7757337497749, 142.439608930397 43.7757960327654, 142.438253486786 43.7758760102554, 142.438201746066 43.775477808121, 142.438176150425 43.7750885654054, 142.438147402225 43.7746609132942, 142.438091037611 43.7741665197696, 142.438027030502 43.7734461216084, 142.4401430906 43.7733476899243, 142.44015982286 43.7735608251715)) ^^http://www.opengis.net/ont/geosparql#wktLiteral