Which type of animal is this, a bird or a cat?
This is a cat.
    src        edge_attr  dst
0     1   to the left of    3
1     3               by    0
2     3  to the right of    1
3     3  to the right of    4
4     3  to the right of    9
5     3  to the right of    8
6     4   to the left of    3
7     8   to the left of    3
8     9               by    0
9     9               in    0
10    9   to the left of    3