Is the tennis ball to the left of the man white or green?
The tennis ball is green.
    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]