What is the animal in the pen climbing?
The elephant is climbing the fence.
    src        edge_attr  dst
0     0   to the left of   12
1     0  to the right of    2
2     1   to the left of    9
3     2   to the left of    9
4     2   to the left of    8
5     2   to the left of    3
6     2   to the left of    0
7     3  to the right of    2
8     4  to the right of    7
9     5  to the right of    7
10    5   to the left of   10
11    6  to the right of    8
12    6   to the left of   12
13    7   to the left of   11
14    7   to the left of    5
15    7   to the left of    4
16    7   to the left of   12
17    8   to the left of    6
18    8         watching    9
19    8  to the right of    2
20    9               in    3
21    9         climbing    4
22    9  to the right of    1
23    9  to the right of    2
24   10  to the right of    5
25   11               on    4
26   11  to the right of    7
27   12  to the right of    0
28   12  to the right of    7
29   12  to the right of    6