メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.409610114517 43.7369531729182, 142.409661661145 43.7374394950244, 142.407305070147 43.7375669223383, 142.407265397321 43.7374858259055, 142.407072305995 43.7375672383936, 142.406425041038 43.7378593509072, 142.405676104682 43.7381563240153, 142.405626645226 43.7376636321593, 142.405581602694 43.737175452845, 142.405506687996 43.7363945849175, 142.406200153704 43.7363420177202, 142.406232205112 43.7367357728986, 142.407594354902 43.7366692315498, 142.40957583054 43.7365710956799, 142.409610114517 43.7369531729182)) ^^http://www.opengis.net/ont/geosparql#wktLiteral