メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.72871458003 35.2218275554085, 136.728797908266 35.2220685035205, 136.729019297263 35.2227064515381, 136.728622073956 35.2228032918602, 136.728326840226 35.2225975111739, 136.728143241851 35.2224748078741, 136.728047911192 35.2223279792733, 136.727994075875 35.2221249553507, 136.727968186256 35.2218318825761, 136.728339099964 35.2217993919857, 136.728503809496 35.2218112440332, 136.72871458003 35.2218275554085)) ^^http://www.opengis.net/ont/geosparql#wktLiteral