メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.641664555851 35.3711142306661, 136.639835157877 35.3709836332699, 136.63994211289 35.3700010104089, 136.639729904803 35.3699708650346, 136.640119292055 35.3693193972668, 136.640575475362 35.3694260183705, 136.640678390053 35.3684610613432, 136.640892283552 35.3668719471644, 136.64208644051 35.3669464001381, 136.641664555851 35.3711142306661)) ^^http://www.opengis.net/ont/geosparql#wktLiteral