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