Is the red bus to the right or to the left of the person?
The bus is to the left of the person.
    src        edge_attr  dst
0     0   to the left of    4
1     0   to the left of   20
2     1  to the right of   18
3     1   to the left of   16
4     2   to the left of   20
..  ...              ...  ...
59   20  to the right of   19
60   20   to the left of   12
61   20  to the right of   11
62   20  to the right of   18
63   21   to the left of   12

[64 rows x 3 columns]