What are the spots on?
The spots are on the fence.
    src        edge_attr  dst
0     0          wearing    9
1     0          wearing    5
2     0         touching    4
3     1   to the left of    9
4     1   to the left of    4
5     3               on    6
6     3  to the right of    7
7     4  to the right of    5
8     4  to the right of    1
9     5   to the left of    4
10    5             near    9
11    5   to the left of    9
12    6             near    7
13    7             near    9
14    7             near    8
15    7   to the left of    3
16    7             near    6
17    8             near    7
18    9             near    7
19    9  to the right of    5
20    9  to the right of    1
21    9             near    5