メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.313625549951 43.0831028418582, 141.314155695687 43.0836051809629, 141.314641034596 43.084051168008, 141.314281739351 43.084256754543, 141.313897218791 43.0844804887447, 141.313066805196 43.0849563561698, 141.312943794469 43.0850445960721, 141.312812646302 43.0849301508193, 141.312582642362 43.0847293050314, 141.312428107332 43.0845944138246, 141.312398210429 43.0845665998024, 141.312040772643 43.0842346701229, 141.311919389227 43.0841219225104, 141.311530072248 43.0837604027174, 141.312286324376 43.0833340827047, 141.312510130134 43.0832047541456, 141.313259294158 43.0827767517993, 141.313625549951 43.0831028418582)) ^^http://www.opengis.net/ont/geosparql#wktLiteral