Which side of the photo is the train on?
The train is on the right of the image.
    src        edge_attr  dst
0     0  to the right of   13
1     0  to the right of   19
2     0  to the right of   16
3     1  to the right of   19
4     1  to the right of    3
5     2               on   18
6     2   to the left of   11
7     3   to the left of   19
8     3   to the left of    1
9     3   to the left of   15
10    3   to the left of    9
11    5   to the left of    6
12    5   to the left of    7
13    5   to the left of    9
14    5   to the left of   15
15    5   to the left of   17
16    6   to the left of    7
17    6  to the right of   18
18    6   to the left of    9
19    6   to the left of   17
20    6  to the right of    5
21    7  to the right of    5
22    7  to the right of   15
23    7  to the right of    6
24    9  to the right of    3
25    9  to the right of    5
26    9  to the right of   15
27    9  to the right of    6
28   10   to the left of   12
29   11  to the right of   18
30   11  to the right of    2
31   11   to the left of   17
32   12  to the right of   10
33   13   to the left of   16
34   13   to the left of    0
35   13  to the right of   19
36   14  to the right of   19
37   15               in    6
38   15  to the right of    5
39   15  to the right of   18
40   15   to the left of   17
41   15   to the left of    9
42   15  to the right of    3
43   15   to the left of    7
44   16   to the left of    0
45   16  to the right of   13
46   16  to the right of   19
47   17  to the right of    5
48   17  to the right of   11
49   17  to the right of    6
50   17  to the right of   15
51   18   to the left of   11
52   18   to the left of   15
53   18   to the left of    6
54   19   to the left of   16
55   19   to the left of    0
56   19   to the left of    1
57   19   to the left of   13
58   19   to the left of   14
59   19  to the right of    3