メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.753658642502 35.4055357870176, 136.752901462511 35.4056936239647, 136.752730481705 35.4051444621554, 136.752618546733 35.4047891590604, 136.75294161307 35.4047188552551, 136.753006702592 35.4047072422009, 136.753397060816 35.4046375941003, 136.753658642502 35.4055357870176)) ^^http://www.opengis.net/ont/geosparql#wktLiteral