メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.96978132819 35.2470244603368, 136.970496210764 35.2477121200553, 136.969944054255 35.2481057369904, 136.969599457987 35.2483588657199, 136.969282104745 35.2485905613209, 136.968550227267 35.2479205416175, 136.967770024966 35.2472436823087, 136.968099578877 35.2469900405606, 136.968464086118 35.2467388502787, 136.96900454919 35.2463336002286, 136.96978132819 35.2470244603368)) ^^http://www.opengis.net/ont/geosparql#wktLiteral