What is the color of the cow behind the street?
The cow is brown.
    src        edge_attr  dst
0     0               in    1
1     0               on   10
2     0             near   10
3     0           behind   10
4     0  to the right of   12
5     1  to the right of    3
6     1  to the right of    9
7     3   to the left of   10
8     3               of    9
9     3   to the left of    1
10    5  to the right of   11
11    5  to the right of   12
12    6               of   11
13    6  to the right of    9
14    6   to the left of   12
15    7  to the right of    9
16    8               of    0
17    9       looking at    0
18    9       looking at   11
19    9       looking at   12
20    9   to the left of    6
21    9   to the left of    1
22    9   to the left of    7
23    9   to the left of   11
24    9   to the left of   10
25   10             near   11
26   10      in front of   11
27   10             near    0
28   10  to the right of    3
29   10  to the right of    9
30   10             near   12
31   10      in front of   12
32   11               on   10
33   11       looking at   12
34   11             near   10
35   11   to the left of    5
36   11               in    1
37   11   to the left of   12
38   11  to the right of    9
39   12  to the right of    6
40   12  to the right of   11
41   12               in    1
42   12               on   10
43   12             near   10
44   12   to the left of    0
45   12   to the left of    5