What is the vehicle to the right of the small flag called?
The vehicle is a truck.
    src        edge_attr  dst
0     1   to the left of    6
1     1   to the left of    5
2     1   to the left of    9
3     1   to the left of    7
4     2  to the right of    5
5     3   to the left of    8
6     3   to the left of    4
7     4   to the left of    8
8     4  to the right of    3
9     5   to the left of    2
10    5  to the right of    1
11    5  to the right of    6
12    6   to the left of    5
13    6   to the left of    9
14    6  to the right of    1
15    7  to the right of    1
16    7   to the left of    8
17    8  to the right of    4
18    8  to the right of    7
19    8  to the right of    3
20    9  to the right of    6
21    9  to the right of    1