メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.740868560803 35.3356506078127, 136.738896238238 35.3360368014722, 136.738369455143 35.3354849081772, 136.738254321003 35.3353086455356, 136.73928045264 35.335125064985, 136.740062719032 35.3349859033934, 136.74072762242 35.3348416057086, 136.740794668923 35.3350036135637, 136.740784955665 35.3353593789028, 136.740868560803 35.3356506078127)) ^^http://www.opengis.net/ont/geosparql#wktLiteral