What color is the fence?
The fence is silver.
    src        edge_attr  dst
0     3   to the left of   17
1     3  to the right of    7
2     3   to the left of   16
3     3   to the left of    5
4     3  to the right of    4
5     3  to the right of   11
6     3               of   12
7     4   to the left of   12
8     4   to the left of    7
9     4   to the left of   11
10    4   to the left of    3
11    5  to the right of   17
12    5  to the right of    3
13    5  to the right of   12
14    5  to the right of   16
15    5  to the right of   11
16    7               of   12
17    7  to the right of    4
18    7   to the left of    3
19   10  to the right of   14
20   10  to the right of   13
21   11  to the right of    4
22   11   to the left of    3
23   11   to the left of   17
24   11   to the left of    5
25   11   to the left of   16
26   12               on    5
27   12   to the left of   17
28   12   to the left of    5
29   12  to the right of    4
30   13   to the left of   10
31   14   to the left of   10
32   16   to the left of   17
33   16   to the left of    5
34   16  to the right of   11
35   16  to the right of    3
36   17  to the right of   11
37   17  to the right of   16
38   17  to the right of   12
39   17   to the left of    5
40   17  to the right of    3