メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.450108189987 36.8886502871339, 137.450281612047 36.8889038834314, 137.450690991 36.8888336243275, 137.451225423432 36.8907862148023, 137.451732856003 36.8927123973721, 137.44777949713 36.8934093880716, 137.447501404009 36.8934637645946, 137.447357492376 36.8902308966779, 137.447252611316 36.8887929033023, 137.447189067016 36.8882935510454, 137.447056244356 36.8867379829408, 137.448715053113 36.8865810504281, 137.450108189987 36.8886502871339)) ^^http://www.opengis.net/ont/geosparql#wktLiteral