メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.87644866948 43.012402226125, 142.876322936536 43.0122942543054, 142.875940378956 43.0120610215618, 142.875432533512 43.0117584927801, 142.876512370737 43.0108119455737, 142.87687393953 43.0110269349175, 142.877026331509 43.0111175302613, 142.876986955026 43.0111517844682, 142.876885264009 43.0112401815413, 142.877390500601 43.0115873769644, 142.876524334648 43.0123362663876, 142.87644866948 43.012402226125)) ^^http://www.opengis.net/ont/geosparql#wktLiteral