メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.416369261262 43.7946635205504, 142.416873169775 43.7949833007557, 142.417377103365 43.7953047652342, 142.417915984417 43.7956329452044, 142.416914522459 43.7964525496723, 142.416555296877 43.7962405227832, 142.416415296088 43.7961462481594, 142.416235670459 43.7960368590441, 142.415896227819 43.7958239570301, 142.415385260471 43.795483931133, 142.414849323219 43.7951442902487, 142.414836011072 43.7951357644804, 142.415810780987 43.7943413381865, 142.416369261262 43.7946635205504)) ^^http://www.opengis.net/ont/geosparql#wktLiteral