What is he using?
The man is using a cell phone.
    src        edge_attr  dst
0     0  to the right of   20
1     0  to the right of   22
2     1   to the left of    7
3     1   to the left of   12
4     2  to the right of    7
5     2   to the left of   16
6     3  to the right of    7
7     5  to the right of   12
8     7   to the left of   20
9     7   to the left of   13
10    7   to the left of    3
11    7   to the left of   18
12    7  to the right of   12
13    7   to the left of   21
14    7   to the left of   14
15    7   to the left of   15
16    7   to the left of   16
17    7   to the left of   17
18    7   to the left of    2
19    7  to the right of    1
20    8   to the left of   12
21   12  to the right of    1
22   12  to the right of   23
23   12   to the left of   20
24   12   to the left of    7
25   12  to the right of    8
26   12   to the left of    5
27   13   to the left of   16
28   13  to the right of    7
29   14  to the right of   21
30   14  to the right of    7
31   15  to the right of    7
32   16  to the right of    7
33   16  to the right of   13
34   16  to the right of   17
35   16  to the right of    2
36   17  to the right of    7
37   17   to the left of   16
38   18  to the right of    7
39   20   to the left of    0
40   20          wearing   10
41   20          wearing   22
42   20  to the right of   12
43   20          wearing    5
44   20            using   21
45   20          wearing   13
46   20  to the right of    7
47   20               on    6
48   20          wearing    9
49   21   to the left of   14
50   21  to the right of    7
51   22   to the left of    0
52   23               in    1
53   23   to the left of   12