What length is the car the fence is to the left of?
The car is long.
    src        edge_attr  dst
0     0               in    3
1     0  to the right of   11
2     1               in    3
3     2  to the right of    5
4     2  to the right of    6
5     2  to the right of    4
6     2  to the right of   17
7     2   to the left of   12
8     2   to the left of    7
9     4   to the left of    2
10    4   to the left of   18
11    5  to the right of    6
12    5   to the left of   12
13    5   to the left of   18
14    5   to the left of    2
15    5   to the left of    7
16    6   to the left of   17
17    6   to the left of    5
18    6  to the right of   20
19    6   to the left of   18
20    6   to the left of    2
21    7  to the right of   17
22    7  to the right of   18
23    7  to the right of    5
24    7  to the right of    2
25    8               in    3
26    9   to the left of   10
27   10  to the right of    9
28   10  to the right of   15
29   11               on   14
30   11   to the left of    0
31   12   to the left of   19
32   12  to the right of    5
33   12  to the right of    2
34   13  to the right of   14
35   14   to the left of   13
36   15   to the left of   10
37   17  to the right of    6
38   17   to the left of   18
39   17   to the left of    7
40   17   to the left of    2
41   18  to the right of    5
42   18  to the right of    6
43   18   to the left of    7
44   18  to the right of   17
45   18  to the right of    4
46   19  to the right of   12
47   20   to the left of    6