Is there a hydrant or a fence?
Yes, there is a fence.
    src        edge_attr  dst
0     0      in front of    8
1     0  to the right of   21
2     1   to the left of   19
3     1   to the left of   18
4     2  to the right of    5
..  ...              ...  ...
60   20   to the left of    7
61   20  to the right of   10
62   20   to the left of    5
63   21               in   13
64   21   to the left of    0

[65 rows x 3 columns]