Which kind of device is on the desk?
The device is a cell phone.
    src        edge_attr  dst
0     1  to the right of    9
1     2  to the right of    4
2     2   to the left of    3
3     2   to the left of    5
4     3  to the right of    2
5     3     plugged into    5
6     3  to the right of    5
7     4   to the left of    5
8     4   to the left of   10
9     4   to the left of    2
10    5  to the right of    2
11    5               on    0
12    5   to the left of    3
13    5  to the right of    4
14    7   to the left of   11
15    7   to the left of   12
16    7   to the left of    9
17    8   to the left of   11
18    9  to the right of    7
19    9   to the left of    1
20   10  to the right of    4
21   11  to the right of    7
22   11  to the right of    8
23   12  to the right of    7