On which side are the cars?
The cars are on the right of the image.
    src        edge_attr  dst
0     0      in front of    4
1     1           behind    2
2     1           behind    4
3     2      in front of    1
4     2      in front of    3
5     2          holding    6
6     2             near    4
7     2      in front of    4
8     2          wearing    8
9     3           behind    2
10    3   to the left of    6
11    4             near    2
12    4      in front of    1
13    4           behind    2
14    4           behind    0
15    4  to the right of    6
16    4  to the right of    5
17    5   to the left of    4
18    5   to the left of   10
19    6  to the right of    3
20    6   to the left of    4
21   10  to the right of    5