Which kind of furniture is the teddy bear sitting on?
The teddy bear is sitting on the sofa.
    src        edge_attr  dst
0     0  to the right of   13
1     0   to the left of    7
2     1   to the left of    7
3     2   to the left of    7
4     4   to the left of   10
5     5  to the right of    6
6     6   to the left of    5
7     7  to the right of    2
8     7  to the right of    1
9     7  to the right of    0
10    8       sitting on   12
11    9  to the right of   13
12   10  to the right of    4
13   13   to the left of    0
14   13   to the left of    9