What color is the skateboard?
The skateboard is brown.
    src        edge_attr  dst
0     0  to the right of   13
1     1   to the left of    9
2     1  to the right of   10
3     2   to the left of    3
4     3  to the right of   13
5     3  to the right of   10
6     3  to the right of    2
7     3   to the left of    9
8     4  to the right of   10
9     4   to the left of    9
10    5          wearing    6
11    5          wearing   11
12    5     walking down   12
13    5          wearing    0
14    5  to the right of   10
15    5          wearing    1
16    5  to the right of   13
17    5   to the left of    9
18    6  to the right of   13
19    9  to the right of    5
20    9  to the right of    3
21    9  to the right of    4
22    9  to the right of    1
23   10   to the left of    5
24   10   to the left of    1
25   10   to the left of   11
26   10   to the left of    4
27   10   to the left of    3
28   11  to the right of   10
29   13   to the left of    5
30   13   to the left of    6
31   13   to the left of    0
32   13   to the left of    3
33   13        riding on    2