メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.70151221761 44.3653066743015, 141.701257193692 44.3654779979016, 141.700967652583 44.3656664530582, 141.700646683031 44.3654106809239, 141.699883668212 44.3648132248677, 141.700966238081 44.3640971945334, 141.701143440456 44.3642398375317, 141.701383701344 44.3644315476857, 141.701866273671 44.3648214837208, 141.702034295396 44.3649559252129, 141.70151221761 44.3653066743015)) ^^http://www.opengis.net/ont/geosparql#wktLiteral