メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.127202012155 42.6909777945191, 143.125738488819 42.6914932805501, 143.125317055056 42.6916418095622, 143.12523773948 42.6916697052951, 143.125200277234 42.691683917719, 143.125182219505 42.6916471998544, 143.125086051669 42.6914526854335, 143.124817352444 42.6909012035077, 143.124723498576 42.6907286154613, 143.124597065662 42.6905514935677, 143.124286738074 42.6900494211175, 143.124375622984 42.6900172334344, 143.124833705774 42.6898516883547, 143.126150736377 42.6893823473301, 143.127093840425 42.6907911106101, 143.127202012155 42.6909777945191)) ^^http://www.opengis.net/ont/geosparql#wktLiteral