What kind of device is not black?
The device is a computer mouse.
    src        edge_attr  dst
0     3   to the left of    7
1     3   to the left of    6
2     3               on    4
3     3   to the left of    8
4     3   to the left of    5
5     5  to the right of    3
6     6  to the right of    3
7     7               on    4
8     7  to the right of    3
9     8               on    4
10    8     plugged into    3
11    8  to the right of    3