"type","value"
strict              , "no"
digraph             , "yes"
graph_id            , "graph_47"
start_graph         , "1"
node_id             , "big"
edge_id             , "->"
start_graph         , "2"
node_id             , "small"
node_id             , "smaller"
node_id             , "smallest"
end_graph           , "2"
end_graph           , "1"
