Do you see a dog to the right of the seagulls?
No, there are birds to the right of the seagulls.
   src        edge_attr  dst
0    0  to the right of    1
1    1   to the left of    0
2    3  to the right of    7
3    4   to the left of    6
4    4               in    8
5    6  to the right of    4
6    7   to the left of    3
7    9        flying in    5