Is the boy to the right or to the left of the person that is walking?
The boy is to the right of the person.
    src        edge_attr  dst
0     0   to the left of   12
1     0   to the left of   11
2     0               on    6
3     2   to the left of   12
4     3  to the right of    9
..  ...              ...  ...
58   17   to the left of    3
59   19   to the left of   11
60   19   to the left of   12
61   20   to the left of    3
62   20  to the right of   12

[63 rows x 3 columns]