メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.435448500505 43.8114069350529, 142.436043150654 43.8117814613286, 142.436069750783 43.8117984875139, 142.436647868018 43.8121627881962, 142.436063481081 43.8126882068823, 142.435502198794 43.8131326633391, 142.435466973611 43.8131604102219, 142.434263023918 43.8124012631771, 142.434280060186 43.8123866964243, 142.433228662261 43.8117363226524, 142.433794145765 43.8112586460358, 142.434387294826 43.8107617056946, 142.434397269561 43.8107532511757, 142.434948523578 43.811092006579, 142.435448500505 43.8114069350529)) ^^http://www.opengis.net/ont/geosparql#wktLiteral