Is the fence yellow or gray?
The fence is gray.
    src        edge_attr  dst
0     0  to the right of   12
1     0          next to    7
2     0  to the right of    1
3     0  to the right of    7
4     1   to the left of    7
5     1   to the left of    0
6     2  to the right of   11
7     2  to the right of    5
8     2   to the left of   13
9     3  to the right of   13
10    3  to the right of    9
11    3             near   11
12    5  to the right of    6
13    5   to the left of   13
14    5   to the left of    2
15    6   to the left of    5
16    7  to the right of   12
17    7   to the left of   14
18    7   to the left of    0
19    7  to the right of    1
20    7             near    0
21    9   to the left of    3
22    9  to the right of   13
23   11   to the left of   13
24   11             near    3
25   11   to the left of    2
26   12   to the left of    7
27   12   to the left of    0
28   13   to the left of    9
29   13  to the right of   11
30   13   to the left of    3
31   13  to the right of    2
32   13  to the right of    5
33   14  to the right of    7