メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.406978454306 43.0776791575321, 141.405850693331 43.0789205243262, 141.404503150035 43.0776186376081, 141.403296968494 43.076470527393, 141.403287119715 43.0764611715114, 141.402277123324 43.0755255585071, 141.403369061902 43.074858052981, 141.403589640502 43.0752815908719, 141.403789247819 43.0755283055425, 141.404061850652 43.075692359299, 141.404520878382 43.0759738327138, 141.405259848758 43.0765353833413, 141.405767621335 43.0769639187588, 141.406419413605 43.0773850735243, 141.406463348909 43.077413458801, 141.406849034004 43.0776089306382, 141.406978454306 43.0776791575321)) ^^http://www.opengis.net/ont/geosparql#wktLiteral