メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.230092421765 36.7547155047697, 137.231016720293 36.7546301391117, 137.230893921856 36.7549344320693, 137.230822287576 36.755184485762, 137.230751612685 36.7555090301273, 137.230699605651 36.755605936868, 137.230219887537 36.7554845071898, 137.230202279543 36.7555647801823, 137.229842012331 36.7555248222347, 137.229401614432 36.755479341286, 137.229309829601 36.7543595511528, 137.229668791381 36.7543436063739, 137.230028386192 36.7543373753338, 137.230092421765 36.7547155047697)) ^^http://www.opengis.net/ont/geosparql#wktLiteral