What do you think are the animals in the sky called?
The animals are birds.
    src        edge_attr  dst
0     2   to the left of    3
1     3  to the right of    2
2     4               in    5
3     4  to the right of    7
4     6  to the right of   11
5     7               in   12
6     7   to the left of    4
7     8               in   12
8     8  to the right of   13
9     9               on    0
10   11   to the left of    6
11   13   to the left of    8