Is there a ball or a buoy in the image?
Yes, there are buoys.
    src        edge_attr  dst
0     0   to the left of    1
1     0  to the right of   15
2     0   to the left of   12
3     0   to the left of   10
4     0  to the right of    4
5     0       sitting on    3
6     0               on    3
7     1  to the right of   15
8     1  to the right of    0
9     1  to the right of    4
10    3  to the right of   13
11    3   to the left of    9
12    3   to the left of    6
13    3   to the left of    7
14    3   to the left of    5
15    4   to the left of    1
16    4          wearing   15
17    4   to the left of   12
18    4   to the left of    0
19    5  to the right of    3
20    5  to the right of    6
21    6               on   13
22    6      in front of   14
23    6   to the left of    7
24    6   to the left of    5
25    6  to the right of    3
26    7  to the right of    6
27    7  to the right of    3
28    7      in front of   14
29    9  to the right of    3
30   10  to the right of   12
31   10  to the right of    0
32   12  to the right of    4
33   12   to the left of   10
34   12  to the right of   15
35   12  to the right of    0
36   13   to the left of    3
37   15   to the left of   12
38   15   to the left of    0
39   15   to the left of    1