Who is holding the device in the middle of the picture?
The boy is holding the cell phone.
    src        edge_attr  dst
0     0   to the left of   18
1     1   to the left of    5
2     1               of    7
3     1  to the right of   12
4     1   to the left of    3
5     3  to the right of   15
6     3   to the left of    5
7     3  to the right of   13
8     3  to the right of   12
9     3  to the right of    1
10    3   to the left of    4
11    4  to the right of    3
12    4  to the right of   18
13    4  to the right of   13
14    5  to the right of   18
15    5  to the right of   16
16    5  to the right of    1
17    5  to the right of    3
18    6   to the left of   18
19    7          holding   13
20   10   to the left of   13
21   12   to the left of    3
22   12   to the left of   13
23   12   to the left of    1
24   13   to the left of    4
25   13  to the right of   12
26   13  to the right of   15
27   13  to the right of   10
28   13   to the left of    3
29   15   to the left of    3
30   15   to the left of   13
31   16   on the side of   17
32   16   to the left of    5
33   18  to the right of    0
34   18  to the right of    6
35   18   to the left of    4
36   18   to the left of    5