Is the small elephant both gray and young?
Yes, the elephant is gray and young.
   src        edge_attr  dst
0    0   to the left of    3
1    0   to the left of    1
2    1  to the right of    7
3    1  to the right of    0
4    3  to the right of    7
5    3  to the right of    0
6    7   to the left of    3
7    7   to the left of    1