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