What is the cat sitting in?
The cat is sitting in the sink.
    src        edge_attr  dst
0     1               in    0
1     1               on    0
2     1  to the right of    7
3     1       sitting in    0
4     2  to the right of    5
5     2  to the right of    7
6     5   to the left of    2
7     5  to the right of    7
8     5   to the left of    9
9     5   to the left of   10
10    7   to the left of    2
11    7   to the left of    5
12    7   to the left of   10
13    7   to the left of    9
14    7   to the left of    1
15    9               of    1
16    9  to the right of    7
17    9  to the right of    5
18   10  to the right of    7
19   10  to the right of    5