Is the wood plate to the left or to the right of the cake?
The plate is to the left of the cake.
    src        edge_attr  dst
0     0   to the left of   15
1     0   to the left of   14
2     0   to the left of   18
3     0   to the left of    7
4     1   to the left of    5
..  ...              ...  ...
59   19  to the right of    6
60   19  to the right of    4
61   19  to the right of   18
62   20  to the right of    6
63   20   to the left of    2

[64 rows x 3 columns]