Are there both hats and fences in the scene?
No, there is a hat but no fences.
    src        edge_attr  dst
0     0  to the right of    9
1     0  to the right of    4
2     0            below    3
3     2            below    3
4     3            above    2
5     3           behind    5
6     3             near    4
7     3            above    0
8     4             near    3
9     4   to the left of    0
10    4   to the left of    9
11    5               on    2
12    5          wearing    1
13    5          wearing    8
14    5          wearing    9
15    5          wearing    6
16    5      in front of    3
17    9  to the right of    4
18    9   to the left of    0