Is the red vehicle to the right or to the left of the white vehicle?
The van is to the right of the truck.
    src        edge_attr  dst
0     0          next to    5
1     0             near    5
2     1  to the right of   10
3     1  to the right of    9
4     1   to the left of    5
5     1      in front of    4
6     1  to the right of    7
7     4  to the right of    6
8     4  to the right of   10
9     4  to the right of    9
10    4           behind    1
11    5  to the right of    1
12    5             near    0
13    6   to the left of    4
14    7   to the left of    1
15    9   to the left of    1
16    9               in    8
17    9   to the left of   10
18    9   to the left of    4
19   10  to the right of    9
20   10   to the left of    4
21   10   to the left of    1