メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.387807982088 43.7237405668041, 142.388152423378 43.7238442430055, 142.388607442569 43.7239836830147, 142.389052297634 43.7241194601962, 142.389574648542 43.7242671296785, 142.389948811504 43.7243847407661, 142.389390727072 43.7253506630971, 142.388811665868 43.7263860675698, 142.388796083246 43.7264137741524, 142.388433525322 43.7262100914107, 142.387964227395 43.7259426338706, 142.387491105833 43.7256760924612, 142.386881947209 43.7253387939902, 142.386193930697 43.7249628925219, 142.385386377863 43.7245079303556, 142.385559724302 43.7242157579663, 142.385893735447 43.7236516615937, 142.386129043721 43.7232387638691, 142.386428981355 43.7233268176637, 142.386686990725 43.7234084867152, 142.387807982088 43.7237405668041)) ^^http://www.opengis.net/ont/geosparql#wktLiteral