On which side of the image is the trailer?
The trailer is on the right of the image.
    src        edge_attr  dst
0     0   to the left of    8
1     0   to the left of    1
2     0  to the right of   10
3     0  to the right of   17
4     0  to the right of    4
5     1  to the right of    0
6     1  to the right of   17
7     2  to the right of   10
8     3   to the left of   13
9     3   to the left of   15
10    4  to the right of   11
11    4   to the left of    0
12    4   to the left of   17
13    8               on    9
14    8  to the right of    0
15   10   to the left of   17
16   10   to the left of    0
17   10   to the left of    2
18   10   to the left of   14
19   11   to the left of    4
20   12   to the left of   14
21   13   to the left of   14
22   13  to the right of   16
23   13  to the right of    3
24   14  to the right of   10
25   14  to the right of   13
26   14  to the right of   12
27   15  to the right of    3
28   16   to the left of   13
29   17  to the right of    4
30   17   to the left of    0
31   17  to the right of   10
32   17   to the left of    1