What color is the elephant?
The elephant is brown.
    src        edge_attr  dst
0     1               by    5
1     1  to the right of    2
2     1  to the right of    3
3     2               on    9
4     2           eating    9
5     2               in    9
6     2           inside    5
7     2   to the left of   10
8     2   to the left of    5
9     2   to the left of    1
10    2  to the right of    8
11    3   to the left of    5
12    3   to the left of    1
13    3  to the right of   11
14    3  to the right of    4
15    4   to the left of    3
16    4   to the left of   11
17    5  to the right of    3
18    5  to the right of   11
19    5  to the right of    2
20    7  to the right of    8
21    7   to the left of   12
22    8   to the left of    7
23    8   to the left of    2
24   10  to the right of    2
25   11  to the right of    4
26   11   to the left of    5
27   11   to the left of    3
28   12  to the right of    7