What device is to the left of the computer?
The device is a screen.
    src        edge_attr  dst
0     0               on    3
1     0   to the left of    2
2     1   to the left of    5
3     1   to the left of    6
4     2               on    3
5     2  to the right of    0
6     4   to the left of    6
7     4               on    3
8     5  to the right of    1
9     6  to the right of    4
10    6               on    3
11    6  to the right of    1