The surfboard the man is sitting on has what color?
The surfboard is blue.
    src        edge_attr  dst
0     0   to the left of   22
1     1        riding on   23
2     1          wearing   12
3     2            below   10
4     3        parked on   11
5     3   to the left of   22
6     4      standing on   19
7     6   to the left of   21
8     8       sitting on    7
9     8      in front of   11
10    9  to the right of   19
11    9      in front of   11
12   13  to the right of   17
13   14   to the left of   20
14   16  to the right of   17
15   16         lying on   17
16   17   to the left of   16
17   17   to the left of   13
18   19        riding on   20
19   19   to the left of    9
20   19   to the left of   20
21   19          wearing   14
22   20  to the right of   14
23   20  to the right of   19
24   21               in    2
25   21  to the right of    6
26   22  to the right of    3
27   22  to the right of    0