メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.431525269014 43.0548216418049, 141.431600487882 43.0559455626687, 141.431586040459 43.055950171237, 141.431688306373 43.0570597265487, 141.430565358467 43.0568480239643, 141.429964813459 43.0566875934972, 141.429896492601 43.0566613642774, 141.429890488645 43.0564783917931, 141.429843569706 43.0557955720817, 141.429789882907 43.0548792787489, 141.429707792693 43.0537841418023, 141.430170464627 43.0537668479353, 141.430652919075 43.0537476528927, 141.431433385389 43.0537179979574, 141.431507990381 43.0545629852147, 141.431525269014 43.0548216418049)) ^^http://www.opengis.net/ont/geosparql#wktLiteral