メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.395026833466 43.0547761729246, 141.395938195001 43.0554962635277, 141.396047769417 43.0555824618957, 141.396646692957 43.0560534270921, 141.395893536465 43.0564482701349, 141.395731595643 43.0565349741066, 141.395601572829 43.0566021534399, 141.394648323929 43.0571225806285, 141.394461944386 43.0569246850307, 141.394068305752 43.0565131953648, 141.393772090309 43.0562759369674, 141.393151034769 43.055811684102, 141.393144221351 43.0558063235806, 141.392052964162 43.0549478246642, 141.39265690822 43.0545317752111, 141.39280631909 43.0544288758132, 141.393745091561 43.0537820427493, 141.394748103687 43.0545713999176, 141.395026833466 43.0547761729246)) ^^http://www.opengis.net/ont/geosparql#wktLiteral