メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.064689274411 42.924525406949, 143.063703068052 42.9244454183829, 143.063827523111 42.9235544803927, 143.064025968575 42.922381195998, 143.064090500737 42.9219183733136, 143.064379492333 42.9219388949256, 143.065131712355 42.921992340006, 143.06501543106 42.9226670204229, 143.064881810544 42.9234421877025, 143.064689274411 42.924525406949)) ^^http://www.opengis.net/ont/geosparql#wktLiteral