What vehicle is the fence in front of?
The fence is in front of the car.
    src        edge_attr  dst
0     2  to the right of    5
1     2  to the right of    3
2     2  to the right of   18
3     3  to the right of    7
4     3   to the left of    2
5     3   to the left of   19
6     4               on   11
7     4   to the left of    9
8     5   to the left of    2
9     5   to the left of   19
10    6  to the right of    9
11    6  to the right of   18
12    6      in front of   17
13    7               of    9
14    7   to the left of    3
15    9   to the left of   13
16    9   to the left of   14
17    9  to the right of   11
18    9   to the left of    6
19    9   to the left of   17
20    9  to the right of    4
21   10  to the right of   11
22   10   to the left of   16
23   10   to the left of   12
24   11   to the left of    9
25   11   to the left of   10
26   12  to the right of   10
27   12   to the left of   16
28   12   to the left of   18
29   13  to the right of   16
30   13  to the right of    9
31   14  to the right of   16
32   14  to the right of    9
33   16          wearing   15
34   16   to the left of   13
35   16   to the left of   14
36   16  to the right of   10
37   16  to the right of   12
38   17  to the right of   18
39   17  to the right of    9
40   17           behind    6
41   18   to the left of   17
42   18   to the left of    6
43   18  to the right of   12
44   18   to the left of    2
45   19  to the right of    5
46   19  to the right of    3