Which color is the cow, tan or black?
The cow is tan.
    src        edge_attr  dst
0     0  to the right of    4
1     1  to the right of   13
2     1   to the left of    9
3     1  to the right of   11
4     2               of   12
5     2  to the right of    9
6     4   to the left of    0
7     4   to the left of    8
8     4   to the left of   10
9     8  to the right of    4
10    9  to the right of    1
11    9   to the left of    2
12   10  to the right of    4
13   11               of   12
14   11   to the left of    1
15   13   to the left of    1