Is the tall tree behind the sign the arrow is on?
Yes, the tree is behind the sign.
   src        edge_attr  dst
0    0               on    5
1    0   to the left of    3
2    1               on    5
3    3  to the right of    0
4    3  to the right of    4
5    3           behind    5
6    4   to the left of    3
7    5      in front of    3