メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.743154684605 35.4153478476275, 136.743003061798 35.4156548447256, 136.742887812586 35.4159309136825, 136.742311484626 35.415780618988, 136.741636387842 35.4155847302041, 136.741743169637 35.4152506070302, 136.741900539452 35.4149230351874, 136.743154684605 35.4153478476275)) ^^http://www.opengis.net/ont/geosparql#wktLiteral