メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.332269851731 43.7540898440229, 142.332859179407 43.754275436975, 142.332865918389 43.7542636352864, 142.333178744618 43.7543681710335, 142.332475695622 43.7554794511789, 142.331940862518 43.7553030114229, 142.331596859912 43.7551932037042, 142.330894574108 43.7549726814961, 142.331536848608 43.7538610844026, 142.332269851731 43.7540898440229)) ^^http://www.opengis.net/ont/geosparql#wktLiteral