Is the tennis racket to the right or to the left of the tennis ball the father is watching?
The tennis racket is to the right of the tennis ball.
    src        edge_attr  dst
0     0   to the left of   11
1     0  to the right of    6
2     0  to the right of   13
3     1   to the left of   21
4     2  to the right of   11
..  ...              ...  ...
60   20  to the right of   13
61   20   to the left of   11
62   21   to the left of    8
63   21  to the right of   16
64   21  to the right of    1

[65 rows x 3 columns]