Which kind of device is white?
The device is a monitor.
    src        edge_attr  dst
0     1  to the right of    8
1     1      in front of    4
2     2           behind    4
3     4   to the left of    5
4     4           behind    1
5     4            above    8
6     4      in front of    2
7     4      in front of    5
8     5  to the right of    4
9     5           behind    4
10    6  to the right of    8
11    7  to the right of    8
12    8   to the left of    1
13    8   to the left of    7
14    8            under    4
15    8   to the left of    6
16    9   to the left of   11
17   11  to the right of    9