What is the sign on?
The sign is on the wall.
    src        edge_attr  dst
0     0   to the left of   14
1     0   to the left of    6
2     1   to the left of    8
3     1   to the left of   10
4     1               on    4
..  ...              ...  ...
58   18   to the left of    6
59   18   to the left of   14
60   19   to the left of    5
61   19  to the right of   17
62   19      in front of    6

[63 rows x 3 columns]