Is the trailer on the right?
Yes, the trailer is on the right of the image.
    src        edge_attr  dst
0     0  to the right of   13
1     2  to the right of    7
2     2             near   14
3     7               on    6
4     7   to the left of    2
5     7   to the left of   15
6    11  to the right of   15
7    13        on top of    2
8    13   to the left of    0
9    14          wearing    5
10   14          next to    2
11   14          wearing    9
12   14  to the right of   15
13   14   to the left of   16
14   15  to the right of    7
15   15               on   15
16   15   to the left of   11
17   15   to the left of   14
18   16  to the right of   14