What is the dog sitting in?
The dog is sitting in the bath tub.
    src        edge_attr  dst
0     0  to the right of    6
1     0  to the right of    5
2     0               of    4
3     1      in front of    3
4     1   to the left of    8
5     1   to the left of    3
6     2               of    4
7     3  to the right of    1
8     3           behind    1
9     4       sitting in    3
10    4               in    3
11    5               of    4
12    5   to the left of    0
13    6               of    4
14    6   to the left of    0
15    7               of    4
16    8               in    3
17    8  to the right of    1