Is the bear small or large?
The bear is large.
   src        edge_attr  dst
0    0  to the right of    1
1    0   to the left of    2
2    1   to the left of    0
3    1   to the left of    4
4    2  to the right of    0
5    2  to the right of    4
6    4  to the right of    1
7    4   to the left of    2