メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.061047199505 42.9154535720751, 143.061122691554 42.9154896102909, 143.061783734482 42.9158053605868, 143.061736389878 42.9162150309741, 143.061670507439 42.916707120438, 143.060037681977 42.9166066415938, 143.060107147064 42.916073101442, 143.06016108671 42.9155013390966, 143.06049324098 42.9151890349683, 143.061047199505 42.9154535720751)) ^^http://www.opengis.net/ont/geosparql#wktLiteral