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