What is the device that the man uses?
The device is a tablet.
    src        edge_attr  dst
0     1  to the right of   10
1     3   to the left of   11
2     4            using    9
3     4          wearing   14
4     4  to the right of    5
5     5   to the left of    9
6     5   to the left of    4
7     5   to the left of   11
8     6   to the left of    8
9     8  to the right of   15
10    8  to the right of    6
11    9  to the right of    5
12    9            below   11
13   10   to the left of    1
14   11            above    9
15   11  to the right of    5
16   11  to the right of    3
17   12  to the right of   15
18   15   to the left of    8
19   15   to the left of   12