Are there fire hydrants or fences in this photo?
Yes, there is a fence.
    src        edge_attr  dst
0     1  to the right of   10
1     1  to the right of    3
2     2       stacked on    0
3     3  to the right of    6
4     3   to the left of    1
5     3   to the left of   11
6     3  to the right of    5
7     3   to the left of   10
8     5   to the left of    3
9     6   to the left of    3
10    8   to the left of    9
11    9  to the right of    8
12   10   to the left of    1
13   10  to the right of    3
14   11  to the right of    3