What is the name of the gray animals?
The animals are elephants.
    src        edge_attr  dst
0     0  to the right of    5
1     0  to the right of    3
2     1   to the left of    8
3     1   to the left of    3
4     2  to the right of    4
5     2  to the right of   10
6     2  to the right of   11
7     3   to the left of    0
8     3  to the right of    4
9     3  to the right of    1
10    3  to the right of    8
11    3   to the left of    5
12    3  to the right of    9
13    3  to the right of   12
14    4               on    3
15    4   to the left of    2
16    4   to the left of    3
17    4      in front of   10
18    5  to the right of    3
19    5   to the left of    0
20    6               of    3
21    7  to the right of   10
22    7               of    4
23    7  to the right of   11
24    7  to the right of    9
25    7               on    3
26    8   to the left of    3
27    8  to the right of    1
28    9   to the left of   13
29    9   to the left of    3
30    9               of    4
31    9   to the left of    7
32   10           behind    4
33   10   to the left of    2
34   10   to the left of    7
35   10   to the left of   13
36   11   to the left of    2
37   11   to the left of    7
38   12   to the left of    3
39   12               of    4
40   13  to the right of    9
41   13  to the right of   10