メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.959156481337 43.5436218686839, 144.958561714733 43.5432412028182, 144.958479107475 43.5431883122479, 144.957921189593 43.542810073039, 144.958543597721 43.5428457025051, 144.958549012153 43.5428198030475, 144.958615069729 43.5424991999542, 144.958635387143 43.5424003773058, 144.959263833563 43.5425061068855, 144.961515325431 43.5428868737428, 144.961502247381 43.5429229064995, 144.961408716896 43.5430014918137, 144.959933991875 43.5430202403013, 144.959156481337 43.5436218686839)) ^^http://www.opengis.net/ont/geosparql#wktLiteral