メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.31539776862 42.2831735836416, 143.314912359666 42.2838125333615, 143.314866493602 42.2838733092696, 143.314269654582 42.2836216883788, 143.313863719452 42.2834505914583, 143.313994432939 42.2834220877613, 143.314441585541 42.2832730476047, 143.314757220924 42.2831105943034, 143.314958372246 42.2829898580279, 143.31539776862 42.2831735836416)) ^^http://www.opengis.net/ont/geosparql#wktLiteral