Are there any white hats or fences?
Yes, there is a white hat.
    src        edge_attr  dst
0     1          wearing    5
1     2  to the right of   10
2     3   to the left of   14
3     4               of    1
4     5  to the right of    8
5     8  to the right of   10
6     8   to the left of    5
7     8  to the right of   14
8     9  to the right of   11
9    10  to the right of   14
10   10  to the right of   13
11   10   to the left of    8
12   10   to the left of    2
13   11   to the left of    9
14   13   to the left of   14
15   13   to the left of   10
16   14  to the right of   13
17   14   to the left of   10
18   14   to the left of    8
19   14  to the right of    3