What does the dog sleep on?
The dog sleeps on the comforter.
    src        edge_attr  dst
0     0  to the right of   10
1     0  to the right of    2
2     0  to the right of    4
3     1  to the right of    9
4     1  to the right of    8
5     2   to the left of   11
6     2   to the left of    3
7     2   to the left of    0
8     3  to the right of    2
9     3  to the right of    4
10    3   to the left of    7
11    4   to the left of    7
12    4   to the left of   11
13    4   to the left of    0
14    4   to the left of    3
15    5      sleeping on    4
16    7  to the right of   11
17    7  to the right of    4
18    7  to the right of    3
19    8  to the right of    9
20    8   to the left of    1
21    9   to the left of    8
22    9   to the left of    1
23   10   to the left of    0
24   11               of    0
25   11  to the right of    4
26   11   to the left of    7
27   11  to the right of    2