What is the cat sleeping on?
The cat is sleeping on the chair.
    src        edge_attr  dst
0     2               of   10
1     2  to the right of    8
2     2  to the right of    6
3     3   to the left of    5
4     5  to the right of    3
5     6  to the right of    8
6     6   to the left of    2
7     8   to the left of    2
8     8   to the left of    9
9     8   to the left of    6
10    9  to the right of    8
11   10      sleeping on    1