メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.370729260567 43.775481399626, 142.370561330194 43.7755398884162, 142.369964927436 43.7756947930311, 142.369105647839 43.7741426789931, 142.3688330063 43.7735845532339, 142.369978919041 43.7733013100502, 142.369916563086 43.7731776085703, 142.370178014599 43.7731035527327, 142.370281367871 43.7732795659345, 142.3705877094 43.7738148343705, 142.370856679324 43.7742764621997, 142.371412527633 43.77523790111, 142.371262029899 43.7753020515438, 142.370929834718 43.7754115548426, 142.370729260567 43.775481399626)) ^^http://www.opengis.net/ont/geosparql#wktLiteral