What do you think is the color of the grass the zebra eats?
The grass is brown.
    src        edge_attr  dst
0     0   to the left of    6
1     0               of    1
2     0   to the left of    5
3     1           eating   12
4     1       looking at   12
5     3               of    1
6     3   to the left of   10
7     3   to the left of    7
8     3   to the left of   11
9     4  to the right of    6
10    5  to the right of    0
11    5               of    1
12    5   to the left of    7
13    5  to the right of    6
14    6   to the left of    4
15    6   to the left of    5
16    6  to the right of    0
17    6               of    1
18    6   to the left of    7
19    7  to the right of    3
20    7  to the right of    5
21    7  to the right of    6
22    8   to the left of   10
23    8   to the left of   11
24   10  to the right of    8
25   10  to the right of    3
26   11  to the right of    3
27   11  to the right of    8
28   11       growing on   10
29   11               on   10