What is the device on the desk?
The device is a computer mouse.
    src        edge_attr  dst
0     0               on    5
1     0   to the left of    6
2     0   to the left of   11
3     1               on    6
4     1  to the right of    2
5     2               on    6
6     2   to the left of    1
7     2  to the right of   12
8     3               on    6
9     5           beside    6
10    5   to the left of    6
11    5   to the left of   10
12    6            above    9
13    6  to the right of    5
14    6           behind   10
15    6  to the right of    0
16    7               on    6
17    8  to the right of   10
18    9            below    6
19    9  to the right of   10
20   10   to the left of    9
21   10  to the right of    5
22   10   to the left of    8
23   10      in front of    6
24   11   to the left of   12
25   11  to the right of    0
26   11               on    6
27   12               on    6
28   12   to the left of    2
29   12  to the right of   11