What is the collar on, a dog or a cat?
The collar is on a cat.
    src        edge_attr  dst
0     0               of    7
1     0   to the left of   15
2     1               of    7
3     1   to the left of    8
4     2   to the left of   12
5     2               of    7
6     2   to the left of    5
7     3   to the left of    5
8     3   to the left of    8
9     4               in    9
10    4  to the right of    5
11    4  to the right of   12
12    4  to the right of    7
13    5  to the right of    3
14    5  to the right of    2
15    5  to the right of   11
16    5   to the left of    4
17    5   to the left of   16
18    6               of    7
19    7               in    9
20    7   to the left of   16
21    7   to the left of    4
22    8  to the right of    1
23    8  to the right of    3
24    8  to the right of   10
25    8  to the right of   14
26    8               in    9
27    9               in    9
28   10   to the left of    8
29   10               on    7
30   11   to the left of   12
31   11   to the left of    5
32   12  to the right of    2
33   12  to the right of   15
34   12  to the right of   13
35   12  to the right of   11
36   12   to the left of    4
37   12   to the left of   16
38   13   to the left of   15
39   13   to the left of   12
40   14   to the left of    8
41   15  to the right of    0
42   15  to the right of   13
43   15   to the left of   12
44   16  to the right of    7
45   16  to the right of   12
46   16  to the right of    5