What is the policeman wearing?
The policeman is wearing a hat.
    src        edge_attr  dst
0     0  to the right of   14
1     0  to the right of    1
2     0   to the left of   12
3     0  to the right of   18
4     1   to the left of   16
..  ...              ...  ...
60   18   to the left of    0
61   18   to the left of   17
62   18   to the left of    2
63   18   to the left of    1
64   19  to the right of    1

[65 rows x 3 columns]