What is the bear on?
The bear is on the bed.
    src        edge_attr  dst
0     0               on    4
1     0  to the right of    6
2     0  to the right of    2
3     1  to the right of    6
4     1  to the right of    2
5     2   to the left of    1
6     2   to the left of    0
7     2   to the left of    7
8     2   to the left of    5
9     5  to the right of    6
10    5  to the right of    2
11    6               on    4
12    6   to the left of    0
13    6   to the left of    5
14    6   to the left of    1
15    6   to the left of    7
16    7  to the right of    6
17    7  to the right of    2