What is the large vehicle?
The vehicle is a truck.
    src        edge_attr  dst
0     0  to the right of    7
1     0  to the right of    2
2     0  to the right of   12
3     0  to the right of    9
4     1  leaning against    5
5     1       leaning on    5
6     1           beside    5
7     1   to the left of   11
8     2   to the left of    0
9     2   to the left of    5
10    4  to the right of    9
11    5  to the right of    9
12    5           behind    6
13    5             near    7
14    5  to the right of    7
15    5  to the right of    8
16    5  to the right of    2
17    5               on   10
18    6      in front of    5
19    6  to the right of    9
20    7           beside   10
21    7             near    5
22    7   to the left of   11
23    7   to the left of    5
24    7   to the left of    0
25    7          next to    5
26    8  to the right of   12
27    8   to the left of    5
28    8   walking behind    5
29    9   to the left of   11
30    9   to the left of    6
31    9   to the left of    5
32    9   to the left of    0
33    9   to the left of    4
34   11  to the right of    1
35   11  to the right of    9
36   11  to the right of    7
37   12   to the left of    8
38   12   to the left of    0
39   12   walking behind    5