What is the cat lying on?
The cat is lying on the rug.
    src        edge_attr  dst
0     0   to the left of    1
1     0   to the left of    5
2     0   to the left of    3
3     1         lying on    2
4     1            above    2
5     1  to the right of    0
6     2            under    1
7     2            below    1
8     3               of    1
9     3  to the right of    0
10    4               of    1
11    5               of    1
12    5  to the right of    0
13    6               of    1
14    7               of    1