メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.330679630618 37.3909026746604, 140.330211610972 37.3907667992844, 140.328789624642 37.3903890826183, 140.328566474325 37.3903320081794, 140.329433939432 37.3901597070661, 140.329933557243 37.3900595719003, 140.330166490126 37.3900128858705, 140.33089665673 37.3898393204138, 140.330818657128 37.3902920248679, 140.330679630618 37.3909026746604)) ^^http://www.opengis.net/ont/geosparql#wktLiteral