Which animal is that?
This is an elephant.
    src        edge_attr  dst
0     0   to the left of    6
1     0   to the left of    3
2     0   to the left of   17
3     2  to the right of   11
4     2  to the right of   17
..  ...              ...  ...
62   17  to the right of    0
63   17   to the left of   12
64   17  to the right of   10
65   17  to the right of    5
66   17  to the right of    9

[67 rows x 3 columns]