メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.729704089804 35.3845253488287, 136.729800320207 35.3855824122687, 136.729829582861 35.3860952429303, 136.729836890663 35.386382229759, 136.729587546573 35.3866325174429, 136.728329164359 35.3857638488637, 136.727100955947 35.3849179513911, 136.725306124549 35.3836795702242, 136.729643658116 35.3834793281046, 136.729692242729 35.3839963840875, 136.729704089804 35.3845253488287)) ^^http://www.opengis.net/ont/geosparql#wktLiteral