What color is the backpack the person wears?
The backpack is orange.
    src        edge_attr  dst
0     2          wearing    0
1     2            above    7
2     2           behind    4
3     2          wearing    1
4     2               on    7
5     2          wearing   10
6     2   to the left of   15
7     2          wearing    6
8     2          wearing    5
9     3   to the left of   12
10    3   to the left of    8
11    4      in front of    2
12    7            under    2
13    8               on    9
14    8   to the left of   12
15    8  to the right of    3
16   11               on    9
17   12  to the right of    8
18   12  to the right of    3
19   12               on    9
20   13               on    9
21   14               on    9
22   15               on    9
23   15  to the right of    2
24   16               on    9
25   17               on    9