What color is the shoe?
The shoe is dark.
    src        edge_attr  dst
0     0   to the left of    4
1     1  to the right of   19
2     1   to the left of    3
3     2  to the right of    3
4     3   to the left of    2
5     3  to the right of    1
6     4  to the right of    0
7     6   to the left of   16
8     7   to the left of   13
9     8   to the left of   16
10    9  to the right of   19
11   10  to the right of   14
12   10  to the right of   20
13   11  to the right of   20
14   13  to the right of    7
15   13  to the right of   20
16   14  to the right of   20
17   14   to the left of   10
18   16  to the right of    8
19   16  to the right of    6
20   18  to the right of   21
21   19   to the left of    9
22   19   to the left of    1
23   20   to the left of   14
24   20     playing with   19
25   20   to the left of   10
26   20   to the left of   13
27   20   to the left of   11
28   21   to the left of   18