Do you see any cow in the grass?
No, there is a sheep in the grass.
    src        edge_attr  dst
0     0               of   12
1     0   to the left of   12
2     2               in    3
3     2  to the right of   12
4     4   to the left of    5
5     4               of   11
6     4   to the left of   11
7     5  to the right of    4
8     5               of   11
9     6   to the left of   13
10    6               of   12
11    6   to the left of   12
12    7               of   11
13    8               in    3
14    9   to the left of   14
15    9               of   12
16   10           behind    3
17   11               in    3
18   11  to the right of    4
19   12               in    3
20   12               on    1
21   12       looking at   11
22   12               in   15
23   12   to the left of    2
24   12  to the right of    0
25   12  to the right of    6
26   13  to the right of    6
27   14  to the right of    9
28   15               in    3