Is there any fence to the left of the sheep that is climbing the hill?
No, the fence is to the right of the sheep.
    src        edge_attr  dst
0     0   to the left of   15
1     0  to the right of    9
2     0   to the left of   16
3     0   to the left of    5
4     1  to the right of   17
5     3  to the right of    9
6     3  to the right of    4
7     4   to the left of    5
8     4   to the left of    3
9     4   to the left of   15
10    4   to the left of   16
11    4   to the left of    7
12    4   to the left of    8
13    5  to the right of    0
14    5  to the right of   16
15    5  to the right of    7
16    5  to the right of   15
17    5  to the right of    4
18    5   to the left of   13
19    6  to the right of   17
20    6   to the left of   11
21    7   to the left of   16
22    7   to the left of    5
23    7  to the right of    4
24    7  to the right of    9
25    7           behind    8
26    8      in front of   16
27    8  to the right of    4
28    8  to the right of    9
29    8   to the left of   13
30    8      in front of    7
31    9   to the left of   16
32    9   to the left of    0
33    9   to the left of    3
34    9   to the left of   15
35    9   to the left of    8
36    9   to the left of    7
37   10   to the left of   11
38   11  to the right of   10
39   11  to the right of    6
40   13  to the right of   14
41   13  to the right of    5
42   13  to the right of    8
43   14   to the left of   13
44   14         climbing   17
45   15  to the right of    4
46   15  to the right of    9
47   15  to the right of    0
48   15   to the left of    5
49   15   to the left of   16
50   16  to the right of    0
51   16  to the right of    9
52   16  to the right of   15
53   16  to the right of    4
54   16  to the right of    7
55   16   to the left of    5
56   16           behind    8
57   17   to the left of    6
58   17   to the left of    1