メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.760450953929 35.4397718021243, 136.760454417256 35.4399906754446, 136.760469409535 35.4409474384461, 136.760501255317 35.4421730106215, 136.760318931013 35.4421441639823, 136.75964525016 35.4419976241084, 136.75864121014 35.4417951462269, 136.758757678521 35.4414275639852, 136.758804154269 35.4412978672493, 136.758911634009 35.4409634570711, 136.758912750021 35.439741588002, 136.758902431019 35.4393214702743, 136.760436904648 35.4392960392557, 136.760450953929 35.4397718021243)) ^^http://www.opengis.net/ont/geosparql#wktLiteral