What's in front of the vehicle?
The fence is in front of the vehicle.
    src        edge_attr  dst
0     0      in front of   14
1     1  to the right of   12
2     1  to the right of    9
3     1               in    2
4     1  to the right of    3
5     3          wearing    7
6     3          wearing   13
7     3          wearing    5
8     3          holding   12
9     3          wearing    9
10    3  to the right of   14
11    3             with   12
12    3   to the left of    1
13    3  to the right of   11
14    3  to the right of   10
15    3   to the left of   12
16    4               on    8
17    6  to the right of   14
18    9  to the right of   10
19    9   to the left of    1
20    9  to the right of   11
21    9   to the left of   12
22    9  to the right of   14
23   10   to the left of    9
24   10   to the left of    3
25   10               by   14
26   11   to the left of    9
27   11   to the left of    3
28   11  to the right of   14
29   12  to the right of    9
30   12   to the left of    1
31   12  to the right of    3
32   14   to the left of    3
33   14           behind    0
34   14   to the left of    9
35   14   to the left of    6
36   14   to the left of   11