On which side of the photo is the fence?
The fence is on the left of the image.
    src        edge_attr  dst
0     1               on   17
1     1  to the right of   18
2     1  to the right of    4
3     2   to the left of   15
4     2   to the left of    3
5     2  to the right of    6
6     3  to the right of    2
7     3  to the right of   10
8     4   to the left of   11
9     4   to the left of   12
10    4   to the left of    1
11    4   to the left of   15
12    4   to the left of   17
13    4   to the left of    8
14    5  to the right of   10
15    5   to the left of    7
16    5               at   16
17    5   to the left of    9
18    5   to the left of   14
19    6   to the left of    2
20    7  to the right of   11
21    7  to the right of    5
22    7               at   16
23    7       walking on    3
24    8  to the right of    4
25    8               at   16
26    9               at   16
27    9  to the right of    5
28    9       walking on    3
29   10   to the left of   15
30   10   to the left of    5
31   10   to the left of    3
32   11  to the right of   13
33   11  to the right of    4
34   11   to the left of   14
35   11   to the left of    7
36   12  to the right of   18
37   12  to the right of    4
38   13   on the side of    5
39   13   to the left of   15
40   13   to the left of   11
41   14  to the right of   11
42   14  to the right of    5
43   15  to the right of    2
44   15  to the right of   13
45   15  to the right of   10
46   15  to the right of    4
47   15  to the right of   18
48   17               at   16
49   17  to the right of   18
50   17  to the right of    4
51   18   to the left of    1
52   18   to the left of   12
53   18   to the left of   15
54   18   to the left of   17