What is this fence in front of?
The fence is in front of the car.
    src        edge_attr  dst
0     0           behind    2
1     0  to the right of    3
2     0  to the right of    4
3     1   to the left of    3
4     1   to the left of    4
5     1           behind    2
6     2      in front of    1
7     2      in front of    0
8     2      in front of    4
9     3   to the left of    0
10    3  to the right of    1
11    4           behind    2
12    4   to the left of    0
13    4  to the right of    1