メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.694591269801 35.0652210755735, 136.694423110512 35.0652337280507, 136.694176238688 35.0643633463164, 136.693968370926 35.0643899576981, 136.693947732034 35.0642791558315, 136.694127466193 35.0642480574525, 136.694015628474 35.0638267791207, 136.694217728409 35.0637816083814, 136.694306376321 35.0641244944432, 136.694591269801 35.0652210755735)) ^^http://www.opengis.net/ont/geosparql#wktLiteral