Which color is the napkin?
The napkin is black.
    src        edge_attr  dst
0     0  to the right of    4
1     2  to the right of   13
2     2  to the right of   15
3     2  to the right of   10
4     2  to the right of    8
5     3  to the right of    8
6     3  to the right of   13
7     3  to the right of   10
8     3   to the left of   18
9     4   to the left of    0
10    4  to the right of   17
11    4   to the left of   12
12    5  to the right of   10
13    5  to the right of    8
14    6  to the right of   10
15    6  to the right of    8
16    6  to the right of   13
17    6   to the left of   18
18    7               on    2
19    7  to the right of   13
20    7   to the left of   18
21    7  to the right of    8
22    7  to the right of   10
23    8             with    9
24    8   to the left of    2
25    8   to the left of    3
26    8   to the left of    5
27    8   to the left of    6
28    8   to the left of    7
29    8               in   10
30    9               in    8
31   10   to the left of    3
32   10          contain    8
33   10   to the left of    5
34   10   to the left of    7
35   10   to the left of    6
36   10   to the left of    2
37   11      filled with   16
38   11             with   16
39   12  to the right of    4
40   13   to the left of    7
41   13   to the left of    2
42   13   to the left of    6
43   13   to the left of    3
44   15               in    8
45   15   to the left of    2
46   16               in   11
47   17               on   14
48   17   to the left of    4
49   18  to the right of    3
50   18  to the right of    7
51   18  to the right of    6