What device is on the desk?
The device is a keyboard.
    src        edge_attr  dst
0     1  to the right of    7
1     1  to the right of    4
2     4  to the right of    7
3     4   to the left of   12
4     4   to the left of    1
5     4   to the left of    8
6     5  to the right of    6
7     5  to the right of    9
8     6   to the left of    5
9     6   to the left of   10
10    7   to the left of    1
11    7   to the left of    8
12    7   to the left of   15
13    7   to the left of    4
14    7               on   16
15    7   to the left of   12
16    8  to the right of    7
17    8  to the right of    4
18    9   to the left of    5
19   10  to the right of   11
20   10  to the right of    6
21   11   to the left of   10
22   12  to the right of    4
23   12  to the right of   15
24   12  to the right of    7
25   15   to the left of   12
26   15  to the right of    7