メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.500708557482 33.2728974404618, 131.502023550735 33.2730448526944, 131.501939696384 33.273690089029, 131.501899239496 33.2740021604749, 131.501863959392 33.2742743746385, 131.50179667511 33.2748562490248, 131.500467908965 33.2747745548475, 131.499369040502 33.2747187644684, 131.499477522238 33.2744285581811, 131.499588851158 33.2741307156321, 131.499831210931 33.273512284153, 131.500088879239 33.2728299348339, 131.500708557482 33.2728974404618)) ^^http://www.opengis.net/ont/geosparql#wktLiteral