What is the vehicle to the right of the flag that is on the wall called?
The vehicle is a truck.
    src        edge_attr  dst
0     0   to the left of    8
1     0   to the left of    5
2     0   to the left of    2
3     0               on    7
4     0   to the left of   10
5     1   to the left of   18
6     2   to the left of    9
7     2  to the right of    7
8     2   to the left of   14
9     2  to the right of    0
10    2   to the left of    3
11    3  to the right of    5
12    3  to the right of    2
13    3  to the right of   10
14    5  to the right of    0
15    5   to the left of    3
16    5  to the right of    7
17    5   to the left of   14
18    6   to the left of   16
19    6   to the left of   13
20    7   to the left of   10
21    7   to the left of    2
22    7   to the left of    5
23    7   to the left of    8
24    8  to the right of    0
25    8  to the right of    7
26    8               on   11
27    9  to the right of   14
28    9  to the right of    2
29    9   to the left of   18
30   10  to the right of    0
31   10   to the left of    3
32   10   to the left of   14
33   10  to the right of    7
34   11   to the left of   13
35   13  to the right of   17
36   13   to the left of   15
37   13  to the right of   11
38   13  to the right of    6
39   14  to the right of   10
40   14   to the left of    9
41   14  to the right of    5
42   14  to the right of    2
43   15  to the right of   13
44   16  to the right of    6
45   16  to the right of   17
46   17   to the left of   13
47   17   to the left of   16
48   18  to the right of    9
49   18  to the right of    1