On which side of the picture are the people?
The people are on the left of the image.
    src        edge_attr  dst
0     0   to the left of   11
1     0   to the left of   16
2     0   to the left of    2
3     1   to the left of   10
4     2      in front of    9
..  ...              ...  ...
80   19   to the left of    5
81   19   to the left of   10
82   20  to the right of   11
83   20  to the right of    2
84   20  to the right of   15

[85 rows x 3 columns]