メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.929439473928 35.0939664848627, 136.929220620544 35.0943486169417, 136.928845739872 35.0942095602543, 136.928608264407 35.0941191577187, 136.928520756391 35.094285545535, 136.927733438448 35.0940025650491, 136.928058172977 35.0933987283414, 136.928180979079 35.0934365077685, 136.92883251182 35.0937092884301, 136.929029579695 35.0937788357735, 136.929204486425 35.0934909196473, 136.929620764032 35.0936328733035, 136.929439473928 35.0939664848627)) ^^http://www.opengis.net/ont/geosparql#wktLiteral