The boy is on what animal?
The boy is on the elephant.
    src        edge_attr  dst
0     0   to the left of   19
1     0   to the left of    7
2     0   to the left of   11
3     1   to the left of   16
4     1   to the left of    4
5     2   to the left of   19
6     4           riding    9
7     4          wearing   16
8     4          holding   13
9     4   on the back of    9
10    4               on    9
11    4   to the left of    8
12    4       sitting on    9
13    4  to the right of    1
14    5   to the left of    7
15    6  to the right of   19
16    7               on    9
17    7  to the right of   19
18    7  to the right of    0
19    7   to the left of    8
20    7   to the left of   17
21    7   to the left of   13
22    7  to the right of    5
23    7   to the left of   18
24    8  to the right of   17
25    8  to the right of    7
26    8  to the right of    4
27    8  to the right of   13
28    9  walking through    1
29    9            above   12
30   11  to the right of    0
31   12            under    9
32   13  to the right of    7
33   13   to the left of    8
34   16  to the right of    1
35   17  to the right of    7
36   17   to the left of    8
37   18  to the right of    7
38   19               of    9
39   19  to the right of    0
40   19   to the left of    6
41   19  to the right of    2
42   19   to the left of    7