メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.743372021124 40.3235978595927, 140.743510805569 40.3236237214501, 140.744099074287 40.3240766837311, 140.74437154468 40.3242452040015, 140.744286619285 40.3247026715999, 140.74335890369 40.3245568934363, 140.743073265925 40.3245129733378, 140.743128294233 40.3243784479873, 140.74332441269 40.3238447604838, 140.743372021124 40.3235978595927)) ^^http://www.opengis.net/ont/geosparql#wktLiteral