Are there fences or helmets in the photograph?
Yes, there is a fence.
    src        edge_attr  dst
0     1           beside    2
1     1   to the left of    2
2     1  to the right of    6
3     1   to the left of    5
4     2  to the right of    1
5     2  to the right of    6
6     5  to the right of    1
7     5  to the right of    6
8     6   to the left of    2
9     6   to the left of    1
10    6           beside    1
11    6   to the left of    5