What is the color of the vehicle on the right?
The truck is red.
    src        edge_attr  dst
0     0               of    5
1     0   to the left of    6
2     0  to the right of    1
3     1   to the left of    0
4     1   to the left of   10
5     1               of    5
6     4            under    5
7     4            below    5
8     5   to the left of    8
9     5   to the left of    9
10    5            above    4
11    5   to the left of    6
12    6  to the right of    5
13    6  to the right of    0
14    8  to the right of    5
15    9  to the right of   10
16    9  to the right of    5
17   10   to the left of    9
18   10  to the right of    1