Which kind of device is to the left of the computer?
The device is a keyboard.
    src        edge_attr  dst
0     1               on    0
1     1  to the right of    8
2     1  to the right of    7
3     2   to the left of    6
4     3               on    2
5     3   to the left of    7
6     4   to the left of    7
7     5   to the left of    7
8     6  to the right of    2
9     7  to the right of    5
10    7   to the left of    1
11    7  to the right of    4
12    7  to the right of    3
13    8   to the left of    1