What is the flag on?
The flag is on the wire.
    src        edge_attr  dst
0     0               in    2
1     2  to the right of   17
2     3   to the left of   11
3     6               on    5
4     7  to the right of   11
5     9        adjusting   12
6     9       working on   12
7     9  to the right of   14
8    11               in   10
9    11  to the right of   16
10   11        parked by    2
11   11  to the right of    3
12   11   to the left of    7
13   11   to the left of   15
14   11  to the right of   14
15   12  to the right of   14
16   14   to the left of    9
17   14          wearing   16
18   14   to the left of   12
19   14   to the left of   11
20   15               on    7
21   15  to the right of   11
22   16   to the left of   11
23   17   to the left of    2