メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.380239476159 43.098048907321, 141.380826377078 43.0981890899715, 141.380628410623 43.0988307905442, 141.380359533783 43.0997759024094, 141.379794285988 43.0996711844283, 141.37925099433 43.0995883616725, 141.378722426872 43.0995164792402, 141.378212207682 43.0994501485601, 141.377627984065 43.0993641937251, 141.377631318933 43.0993524745633, 141.377716723041 43.0989888356693, 141.377910125391 43.0982383123917, 141.378530809039 43.0981417652848, 141.379351311057 43.0980041856066, 141.379821629079 43.0979394719941, 141.380239476159 43.098048907321)) ^^http://www.opengis.net/ont/geosparql#wktLiteral