On which side of the picture are the people?
The people are on the left of the image.
    src        edge_attr  dst
0     0       walking on   15
1     0  to the right of   11
2     0  to the right of    5
3     0  to the right of   17
4     0  to the right of   12
..  ...              ...  ...
68   21  to the right of   24
69   22   to the left of   13
70   23   to the left of    6
71   24   to the left of    4
72   24   to the left of   21

[73 rows x 3 columns]