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