Do you see black cars or trucks?
Yes, there is a black truck.
     src        edge_attr  dst
0      0   to the left of   11
1      0   to the left of   30
2      0   to the left of   29
3      0   to the left of   33
4      0   to the left of   31
..   ...              ...  ...
236   33  to the right of    8
237   33   to the left of   25
238   33  to the right of   17
239   33   to the left of    4
240   33  to the right of    3

[241 rows x 3 columns]