メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.704780681656 44.3710155859768, 141.701814028059 44.372922537805, 141.701406873122 44.3726112643733, 141.702047658479 44.3721738645156, 141.702200452671 44.3722247008311, 141.702841265118 44.37145175613, 141.702832811705 44.3710333440005, 141.70287074539 44.3709704201513, 141.702982107636 44.3708280403198, 141.703226321134 44.3705299911349, 141.703594642079 44.3700730975894, 141.703873526939 44.3703101311757, 141.704780681656 44.3710155859768)) ^^http://www.opengis.net/ont/geosparql#wktLiteral