メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.273697218284 44.0178617758404, 144.273686562965 44.0179380868171, 144.273661489454 44.018117494799, 144.274793788024 44.0180899809633, 144.274776785711 44.0182144103828, 144.274772179045 44.018210767672, 144.274675713183 44.0186456870742, 144.273110767476 44.0184843346065, 144.273221877578 44.0179010832716, 144.273296168146 44.0175587514639, 144.273365369483 44.0173188093469, 144.27345392153 44.0171436328708, 144.273480461619 44.0171046232728, 144.273509168035 44.0170948885346, 144.273562573113 44.0170722192816, 144.27365228404 44.0171085929459, 144.273790591821 44.0171641652179, 144.273802003554 44.0172017438871, 144.273712251957 44.0177538273716, 144.273697218284 44.0178617758404)) ^^http://www.opengis.net/ont/geosparql#wktLiteral