メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.191306864153 36.7517179361589, 137.191124501428 36.7515843443926, 137.190758588905 36.751828868624, 137.190009933218 36.7523591036192, 137.189471271183 36.7530308809258, 137.188148978154 36.7531173058415, 137.187801389245 36.7502916927707, 137.189139570013 36.7501971737003, 137.190330835876 36.75011477919, 137.191077045172 36.7500633019332, 137.191422565085 36.7504960177074, 137.191763188977 36.7509647091593, 137.191933533256 36.7512277791982, 137.191831885337 36.7513368599116, 137.191647027575 36.7514976362459, 137.191484348811 36.7516226409977, 137.191306864153 36.7517179361589)) ^^http://www.opengis.net/ont/geosparql#wktLiteral