Are there both flags and boats in the scene?
Yes, there are both a boat and a flag.
     src        edge_attr  dst
0      0  to the right of   17
1      1  to the right of   17
2      1   to the left of    2
3      1  to the right of   22
4      1  to the right of   20
..   ...              ...  ...
219   43  to the right of   29
220   43  to the right of   22
221   43  to the right of    5
222   44   to the left of    8
223   44   to the left of   15

[224 rows x 3 columns]