メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.891661359376 35.2612606638903, 136.891664268275 35.2629996675834, 136.891029730575 35.2628587362248, 136.890481184541 35.2627430650759, 136.889281339225 35.2627655542337, 136.888665083157 35.2627795032783, 136.888650157928 35.2622221662315, 136.888636663745 35.2609631660663, 136.889819488134 35.2609950888352, 136.890430664707 35.261012674372, 136.891647996363 35.2610347989233, 136.891649322753 35.2611635982347, 136.891661359376 35.2612606638903)) ^^http://www.opengis.net/ont/geosparql#wktLiteral