Who is pointing?
The officer is pointing.
    src        edge_attr  dst
0     0  to the right of    1
1     1   to the left of   20
2     1   to the left of   12
3     1               of    9
4     1   to the left of    8
..  ...              ...  ...
62   20   to the left of    8
63   20  to the right of    1
64   20               on    9
65   21   to the left of   12
66   21   to the left of    8

[67 rows x 3 columns]