What are the elephants that are standing doing?
The elephants are eating.
    src        edge_attr  dst
0     1  to the right of   13
1     1   to the left of    9
2     1  to the right of   16
3     1  to the right of   14
4     1  to the right of    6
..  ...              ...  ...
70   16   to the left of    1
71   16  to the right of   13
72   16   to the left of    4
73   16  to the right of    2
74   16   to the left of    8

[75 rows x 3 columns]