メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.888636663745 35.2609631660663, 136.888085088719 35.2609476790958, 136.887376706507 35.2609278147348, 136.885102912988 35.261191931466, 136.884510183767 35.2612708389784, 136.884446929468 35.2612577351097, 136.884156477888 35.2596069498223, 136.884807111994 35.2595309962686, 136.886027961309 35.2594028444859, 136.887113978093 35.259265074869, 136.887264788569 35.2592459156527, 136.888131578035 35.2591797431201, 136.888630259676 35.2591794798467, 136.888636663745 35.2609631660663)) ^^http://www.opengis.net/ont/geosparql#wktLiteral