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