What color does the cow that is to the left of the fence have?
The cow has brown color.
    src        edge_attr  dst
0     0  to the right of   11
1     0   to the left of    2
2     1  to the right of    4
3     2  to the right of    5
4     2  to the right of    0
5     2  to the right of    6
6     3  to the right of    4
7     4   to the left of    1
8     4   to the left of   10
9     4   to the left of    3
10    5  to the right of   11
11    5   to the left of    2
12    6   to the left of    2
13    6  to the right of   11
14   10  to the right of    4
15   11   to the left of    6
16   11   to the left of    5
17   11   to the left of    0