メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.169620368966 35.0654741368589, 137.169514088223 35.0655887169391, 137.169102571492 35.0659785851866, 137.168796886005 35.0662957043497, 137.168020119082 35.0659094790255, 137.167907594197 35.0660661022444, 137.167529498112 35.0660234864226, 137.167591981894 35.0651728911277, 137.168366732216 35.065194107849, 137.168430168495 35.0651713612404, 137.168708935363 35.0647283926522, 137.168751958553 35.0645934602533, 137.169940731491 35.0649572902673, 137.169620368966 35.0654741368589)) ^^http://www.opengis.net/ont/geosparql#wktLiteral