Who is walking on the platform?
The people are walking on the platform.
    src        edge_attr  dst
0     0  to the right of   13
1     0  to the right of   14
2     0               in   16
3     1  to the right of    8
4     1  to the right of   11
..  ...              ...  ...
83   19  to the right of    5
84   19  to the right of    3
85   19  to the right of    4
86   19  to the right of   12
87   19  to the right of   18

[88 rows x 3 columns]