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