What vehicles are below the lamp?
The vehicles are cars.
    src        edge_attr  dst
0     0   to the left of    5
1     2  to the right of    3
2     2   to the left of    5
3     2  to the right of    6
4     3   to the left of    2
5     3   to the left of    4
6     3  to the right of    8
7     4               of    4
8     4  to the right of    6
9     4   to the left of   12
10    4  to the right of    3
11    5  to the right of    2
12    5  to the right of    0
13    6   to the left of    4
14    6   to the left of    2
15    8               on    6
16    8   to the left of    3
17    9            above   12
18   10               on    6
19   11        on top of    5
20   11               on    5
21   12            below    9
22   12  to the right of    4
23   12               of   12