Which animal is this, a wolf or a giraffe?
That is a giraffe.
    src        edge_attr  dst
0     1               in    0
1     1   to the left of    4
2     2  to the right of    5
3     2  to the right of    4
4     2  to the right of    7
5     3  to the right of    4
6     3  to the right of    5
7     4   to the left of    2
8     4               in    6
9     4  to the right of    1
10    4   to the left of    3
11    5   to the left of    3
12    5   to the left of    2
13    5   to the left of    7
14    7  to the right of    5
15    7   to the left of    2