Is the collar on a dog?
Yes, the collar is on a dog.
    src        edge_attr  dst
0     0  to the right of    3
1     0  to the right of    9
2     3   to the left of    0
3     3  to the right of    9
4     3               of    7
5     5  to the right of    9
6     6               of    7
7     9   to the left of    0
8     9   to the left of    5
9     9   to the left of    3
10   10       growing on    1
11   11               on    7