Who is holding the device that is in the center of the photo?
The policeman is holding the cell phone.
    src        edge_attr  dst
0     0   to the left of    7
1     0   to the left of    9
2     0   to the left of   13
3     0   to the left of    6
4     0   to the left of    3
5     1   to the left of   12
6     1   to the left of    9
7     1   to the left of    7
8     3  to the right of    0
9     5  to the right of    7
10    5  to the right of    9
11    6          wearing    4
12    6          wearing    3
13    6  to the right of    0
14    6            using    8
15    6          wearing   10
16    6          holding    8
17    7               of    6
18    7   to the left of    5
19    7  to the right of    0
20    7  to the right of    1
21    8   to the left of   12
22    9   to the left of    5
23    9  to the right of    1
24    9  to the right of    0
25   11               on   13
26   11   to the left of   13
27   12  to the right of    1
28   12  to the right of    8
29   13  to the right of    0
30   13  to the right of   11