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