Does the flag have a different color than the trailer?
No, both the flag and the trailer are white.
    src        edge_attr  dst
0     0  to the right of   17
1     1               of   12
2     2               of   11
3     3  to the right of    7
4     3               of   11
5     4               of   11
6     4  to the right of    9
7     4  to the right of    5
8     5   to the left of   13
9     5   to the left of    4
10    5               of   12
11    6  to the right of   14
12    7   to the left of   11
13    7   to the left of   13
14    7   to the left of    3
15    7               of   12
16    8               of   12
17    9               of   12
18    9   to the left of    4
19    9   to the left of   13
20   11          holding   17
21   11           riding   12
22   11         carrying   17
23   11               on   12
24   11  to the right of    7
25   11  to the right of   14
26   12  to the right of   14
27   13  to the right of    5
28   13  to the right of    7
29   13  to the right of    9
30   14   to the left of   12
31   14   to the left of    6
32   14   to the left of   11
33   17   to the left of    0