Is the flag to the right or to the left of the boat in the harbor?
The flag is to the left of the boat.
    src        edge_attr  dst
0     0   to the left of    6
1     0   to the left of   26
2     0               of    1
3     0   to the left of   27
4     0  to the right of   14
..  ...              ...  ...
83   28  to the right of    9
84   28  to the right of   23
85   29   to the left of   28
86   29  to the right of   14
87   29   to the left of    0

[88 rows x 3 columns]