Is the black bus to the left or to the right of the truck on the left?
The bus is to the right of the truck.
    src        edge_attr  dst
0     0  to the right of    1
1     1  to the right of   11
2     1   to the left of    0
3     2  to the right of    4
4     2      in front of    1
5     3        on top of    2
6     3      in front of    9
7     3      in front of    6
8     3           behind    4
9     3  to the right of    4
10    4      in front of    3
11    4   to the left of    2
12    4   to the left of    3
13    4   to the left of    7
14    6           behind    3
15    7  to the right of    4
16    9           behind    3
17   11   to the left of    1