What color is the pepper grinder in the middle?
The pepper shaker is white.
    src        edge_attr  dst
0     0               on    9
1     1  to the right of    7
2     2  to the right of    6
3     3               on    2
4     4   to the left of    5
5     5               on    2
6     5  to the right of    4
7     6   to the left of    2
8     6   to the left of   11
9     7   to the left of    1
10    7  to the right of   14
11    7  to the right of   18
12    8   to the left of   16
13   10   to the left of   15
14   10   to the left of   13
15   10   to the left of   12
16   11       wrapped in   12
17   11  to the right of   12
18   11  to the right of    6
19   12  to the right of   10
20   12   to the left of   11
21   13  to the right of   10
22   13  to the right of   16
23   14  to the right of   18
24   14  to the right of   17
25   14   to the left of    7
26   15  to the right of   10
27   15  to the right of   16
28   16   to the left of   13
29   16  to the right of    8
30   16   to the left of   15
31   17   to the left of   18
32   17   to the left of   14
33   17               on   18
34   18  to the right of   17
35   18   to the left of   14
36   18   to the left of    7