メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.160240347987 35.0888568767256, 137.160339340518 35.0894718477365, 137.159816852455 35.0895337951828, 137.159753555659 35.0892124345761, 137.159717163437 35.0889060054494, 137.159699639364 35.0887045833729, 137.159648049114 35.0881561672414, 137.159633964416 35.0878910803723, 137.160101587164 35.0878573726581, 137.160140196905 35.0882884568935, 137.160240347987 35.0888568767256)) ^^http://www.opengis.net/ont/geosparql#wktLiteral