What kind of vehicle is behind the grill?
The vehicle is a truck.
    src        edge_attr  dst
0     0  to the right of    2
1     1   to the left of    6
2     1  to the right of    2
3     2   to the left of   10
4     2   to the left of    1
5     2   to the left of    0
6     2  on the front of    9
7     3  to the right of    7
8     4   to the left of    6
9     5      in front of    9
10    5   to the left of    7
11    6  to the right of    4
12    6  to the right of    1
13    7  to the right of    5
14    7   to the left of    3
15    9           behind    5
16   10  to the right of    2