メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.782509784064 35.4455535613118, 136.780158881811 35.4456794698541, 136.780140092675 35.4454152602679, 136.780689500502 35.4453975741448, 136.780666723684 35.4451933871084, 136.781088505748 35.4451680032486, 136.781102402466 35.4453673035844, 136.782484051741 35.4453001748869, 136.782509784064 35.4455535613118)) ^^http://www.opengis.net/ont/geosparql#wktLiteral