What color is the litter?
The litter is green.
    src        edge_attr  dst
0     0   to the left of   12
1     0               on    2
2     0   to the left of    6
3     0  to the right of    5
4     0  to the right of   14
5     1   to the left of   14
6     1   to the left of   11
7     3   to the left of   11
8     4  to the right of   14
9     4   to the left of   12
10    5   to the left of    9
11    5   to the left of    0
12    6  to the right of    0
13    6  to the right of   14
14    6   to the left of   12
15    7  to the right of   10
16    8   to the left of    9
17    8   to the left of   10
18    9  to the right of   10
19    9  to the right of    8
20    9  to the right of   14
21    9  to the right of    5
22   10               on    2
23   10  to the right of   13
24   10  to the right of    8
25   10   to the left of    7
26   10   to the left of    9
27   11  to the right of    1
28   11  to the right of    3
29   12  to the right of    4
30   12  to the right of    6
31   12  to the right of   14
32   12  to the right of    0
33   13   to the left of   10
34   14   to the left of    6
35   14   to the left of    9
36   14   to the left of    4
37   14   to the left of    0
38   14  to the right of    1
39   14   to the left of   12