What is the cat in?
The cat is in the tub.
    src        edge_attr  dst
0     1   to the left of    9
1     1   to the left of   11
2     2               in    7
3     3  to the right of   11
4     4   to the left of   12
5     4   to the left of   11
6     5   to the left of    8
7     8  to the right of    5
8     9  to the right of    1
9    11       sitting in    7
10   11           inside    7
11   11   to the left of    3
12   11  to the right of    4
13   11               in    7
14   11  to the right of    1
15   12  to the right of    4