Where is the bear?
The bear is on the river.
    src        edge_attr  dst
0     0               of    9
1     0   to the left of    6
2     0   to the left of    2
3     1  to the right of    4
4     1  to the right of    2
5     1               of    9
6     2   to the left of    1
7     2  to the right of    0
8     3               of    9
9     3   to the left of    5
10    3  to the right of    4
11    4               of    9
12    4   to the left of    3
13    4   to the left of    8
14    4   to the left of    5
15    4   to the left of    1
16    5  to the right of    4
17    5  to the right of    3
18    5               of    9
19    6               of    9
20    6  to the right of    0
21    7               of    9
22    8  to the right of    4
23    8               of    9
24    9      standing in   10
25    9               on   10