Are there any trays or flags in this photo?
Yes, there is a flag.
    src        edge_attr  dst
0     0  to the right of    3
1     0  to the right of    2
2     0   to the left of    9
3     0   to the left of   12
4     1          wearing   17
5     1          wearing   13
6     1          wearing    8
7     2          wearing    3
8     2   to the left of    9
9     2   to the left of    0
10    2   to the left of   12
11    3   to the left of    9
12    3   to the left of    0
13    3   to the left of   12
14    5  to the right of   16
15    5  to the right of    9
16    5  to the right of   12
17    7   to the left of   10
18    8  to the right of   13
19    8  to the right of   17
20    9  to the right of    0
21    9   to the left of    5
22    9   to the left of   14
23    9   to the left of   10
24    9  to the right of    3
25    9  to the right of    2
26   10  to the right of   12
27   10  to the right of    7
28   10  to the right of    9
29   10  to the right of   16
30   11               on   20
31   12   to the left of   10
32   12   to the left of    5
33   12   to the left of   14
34   12  to the right of    3
35   12  to the right of    0
36   12  to the right of    2
37   13   to the left of    8
38   14  to the right of    9
39   14  to the right of   12
40   14  to the right of   16
41   14               on    5
42   15               on    4
43   16   to the left of   10
44   16   to the left of   14
45   16   to the left of   19
46   16   to the left of   18
47   16   to the left of    5
48   17   to the left of    8
49   18  to the right of   16
50   19  to the right of   16