メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.381539079876 43.0833525793504, 141.381548017105 43.0833719170403, 141.381706518307 43.0836772920877, 141.38100950508 43.083970621665, 141.380480442482 43.0842067780119, 141.379790387119 43.0843876265709, 141.379441584596 43.0834293462839, 141.379117606987 43.0824802548891, 141.379810725399 43.0825758970721, 141.379917657458 43.0825862743438, 141.38027080745 43.0826293963427, 141.380659519164 43.0826751781941, 141.381095217938 43.0827296143141, 141.381312245951 43.082757352597, 141.381348432122 43.0829527198643, 141.381539079876 43.0833525793504)) ^^http://www.opengis.net/ont/geosparql#wktLiteral