メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.81363898337 34.0571495360936, 131.813091584181 34.0573623674428, 131.812914740055 34.0570322008422, 131.813069440811 34.0569699582464, 131.812990944367 34.056801522214, 131.812915596316 34.056824407607, 131.812801600606 34.0566198046569, 131.812916615105 34.0565771699829, 131.812849729699 34.0564714587611, 131.812819044436 34.0564837669616, 131.812771926846 34.0564124881121, 131.812695410273 34.0564414270344, 131.812370267453 34.0558385115094, 131.812804197735 34.0556767763209, 131.813470022982 34.0568260146457, 131.81363898337 34.0571495360936)) ^^http://www.opengis.net/ont/geosparql#wktLiteral