What device is on the desk?
The device is a keyboard.
    src        edge_attr  dst
0     2             near    6
1     2      in front of    7
2     2            above    3
3     3       underneath    2
4     4               on    2
5     4   to the left of    7
6     5               on    2
7     6               on    2
8     6             near    2
9     7           behind    2
10    7               on    8
11    7  to the right of    4