メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.368555252829 43.7727893608458, 142.36768500872 43.7730421236352, 142.366942142398 43.7732430641858, 142.366771850405 43.7729545850822, 142.366447142712 43.7723812478386, 142.366318311157 43.7721340931134, 142.367055875853 43.7719020431454, 142.367890790658 43.7716705744492, 142.368074809844 43.7719427954794, 142.368438368211 43.7725706751393, 142.368555252829 43.7727893608458)) ^^http://www.opengis.net/ont/geosparql#wktLiteral