メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.204201913889 36.0657501508758, 136.203811523583 36.0657617478282, 136.203921396365 36.0653911399279, 136.203966656377 36.065248188668, 136.204026195962 36.0649557180936, 136.204359565533 36.0638886900082, 136.204448447756 36.0639255395755, 136.204666365417 36.0639898053996, 136.204600967684 36.0642800781812, 136.204509987377 36.0645947997679, 136.204333261664 36.0652780659147, 136.204272693131 36.0655182330027, 136.204201913889 36.0657501508758)) ^^http://www.opengis.net/ont/geosparql#wktLiteral