メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.743311234063 35.2898749715806, 136.743085595347 35.2899101725374, 136.742837499927 35.2890408534948, 136.743462761712 35.2889491553793, 136.743531992751 35.2892688343332, 136.743292900637 35.2892985669797, 136.743325606742 35.2894581181584, 136.743321434863 35.2895578927501, 136.743305552515 35.2897374863642, 136.743311234063 35.2898749715806)) ^^http://www.opengis.net/ont/geosparql#wktLiteral