"type","value"
strict , "no"
digraph , "no"
graph_id , "graph_49"
start_scope , "1"
class_id , "node"
open_bracket , "["
attribute_id , "shape"
equals , "="
attribute_value , "box"
close_bracket , "]"
node_id , "course"
node_id , "institute"
node_id , "student"
class_id , "node"
open_bracket , "["
attribute_id , "shape"
equals , "="
attribute_value , "ellipse"
close_bracket , "]"
start_scope , "2"
end_scope , "2"
node_id , "code"
node_id , "grade"
node_id , "number"
node_id , "name0"
edge_id , "--"
node_id , "course"
node_id , "code"
edge_id , "--"
node_id , "course"
class_id , "graph"
open_bracket , "["
attribute_id , "fontsize"
equals , "="
attribute_value , "20"
close_bracket , "]"
end_scope , "1"