メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.3457703743 43.7465408765326, 142.346330879048 43.7466973904036, 142.346084096431 43.7471212538179, 142.345892315297 43.7474510488039, 142.345444673337 43.748220342189, 142.344892469645 43.748045375801, 142.344360452111 43.7478760146851, 142.343827981473 43.7477132628854, 142.343231373019 43.7475300276569, 142.342488598553 43.7472993551333, 142.342498616665 43.74728231133, 142.343376237654 43.7457887844084, 142.344120476495 43.7460140524924, 142.345779093045 43.7465272269525, 142.3457703743 43.7465408765326)) ^^http://www.opengis.net/ont/geosparql#wktLiteral