What color is the keyboard that the man types on?
The keyboard is white.
    src        edge_attr  dst
0     0  to the right of    5
1     0  to the right of    3
2     0  to the right of    6
3     1               on    9
4     1   to the left of   11
5     3   to the left of    0
6     4   to the left of   12
7     4   to the left of   11
8     5   to the left of    0
9     6   to the left of    0
10    7   to the left of   11
11    7   to the left of   12
12    8   to the left of   11
13    8   to the left of   12
14   10        typing on    4
15   11               on    9
16   11  to the right of    4
17   11  to the right of    1
18   11  to the right of    7
19   11  to the right of    8
20   12  to the right of    7
21   12  to the right of    8
22   12  to the right of    4