メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.586738912596 33.2457776924677, 131.586097947403 33.2459097754065, 131.585585400275 33.2460394934617, 131.584475930615 33.2462816300227, 131.584106187699 33.2463788307119, 131.583816275083 33.2464473726972, 131.583549080279 33.2461444798726, 131.584308172912 33.2457413267587, 131.584832340442 33.2454559629108, 131.585851776013 33.2452664966623, 131.587405417611 33.2449721517102, 131.588321425048 33.2448132304767, 131.588339993455 33.2448566605161, 131.588491878288 33.2452400245058, 131.588540107873 33.2453870144204, 131.587201153715 33.2456729511475, 131.586738912596 33.2457776924677)) ^^http://www.opengis.net/ont/geosparql#wktLiteral