Who is holding the toothbrush?
The boy is holding the toothbrush.
    src        edge_attr  dst
0     0   to the left of    3
1     0   to the left of    6
2     0   to the left of    5
3     0   to the left of   16
4     1               of    2
5     1  to the right of   10
6     2             near   16
7     2      in front of    9
8     2      in front of   10
9     2          holding   11
10    2   to the left of   12
11    2          holding    6
12    3               in    6
13    3   to the left of    5
14    3  to the right of    0
15    3   to the left of   16
16    3  to the right of   14
17    4   to the left of   12
18    4   to the left of    8
19    4   to the left of    5
20    4   to the left of   16
21    5  to the right of   14
22    5  to the right of    0
23    5  to the right of    6
24    5  to the right of    3
25    5  to the right of    4
26    6   to the left of    5
27    6  to the right of    0
28    6   to the left of   16
29    6  to the right of   14
30    7  to the right of   10
31    7   to the left of   15
32    8  to the right of    4
33    9           behind    2
34   10   to the left of    7
35   10   to the left of    1
36   10           behind    2
37   12  to the right of    4
38   12  to the right of   17
39   12  to the right of    2
40   14   to the left of    3
41   14   to the left of    6
42   14   to the left of    5
43   14   to the left of   16
44   15  to the right of    7
45   16          holding    8
46   16          next to    2
47   16  to the right of    4
48   16  to the right of    3
49   16  to the right of    0
50   16  to the right of    6
51   16  to the right of   14
52   17   to the left of   12
53   17               of    2
54   18               of    2
55   19           beside    2
56   19             near   20
57   20          next to   19