Who is riding?
The people are riding.
     src        edge_attr  dst
0      0  to the right of   24
1      0  to the right of   23
2      0  to the right of   28
3      0  to the right of   13
4      0  to the right of   11
..   ...              ...  ...
103   27   to the left of   13
104   28   to the left of    0
105   28   to the left of    4
106   28   to the left of    5
107   28   to the left of   12

[108 rows x 3 columns]