Is the man to the right or to the left of the animal on the boat?
The man is to the right of the dog.
   src        edge_attr  dst
0    1  to the right of    5
1    2               on    0
2    5               on    3
3    5   to the left of    8
4    5   to the left of    7
5    5   to the left of    1
6    7   to the left of    8
7    7  to the right of    5
8    8  to the right of    5
9    8  to the right of    7