メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.050672413736 42.91026983431, 143.050591158397 42.9108958033368, 143.049818643314 42.9108446516348, 143.049086117686 42.9107930748701, 143.049226034697 42.9097967454544, 143.049979180565 42.9098457162961, 143.049998620577 42.9098469867615, 143.050722694739 42.9098969992289, 143.050679395018 42.910217879977, 143.050672413736 42.91026983431)) ^^http://www.opengis.net/ont/geosparql#wktLiteral