Is the green helmet to the left of a bus?
Yes, the helmet is to the left of a bus.
    src        edge_attr  dst
0     0   to the left of    3
1     3   to the left of   18
2     3  to the right of    0
3     4   to the left of   10
4     4  to the right of   16
5     4  to the right of   11
6     4   to the left of   13
7     4               on    1
8     5   to the left of   10
9     6  to the right of   11
10    6   to the left of    7
11    6  to the right of   17
12    6   to the left of    9
13    6               on   17
14    7  to the right of    6
15    7  to the right of    9
16    9  to the right of   11
17    9  to the right of    6
18    9   to the left of    7
19    9  to the right of   17
20   10  to the right of   16
21   10  to the right of   11
22   10  to the right of   13
23   10  to the right of    4
24   10  to the right of    5
25   11   to the left of    4
26   11   to the left of   10
27   11  to the right of   16
28   11               on   17
29   11   to the left of    6
30   11   to the left of    9
31   11   to the left of   13
32   11   to the left of   14
33   13   to the left of   10
34   13               on    1
35   13  to the right of    4
36   13  to the right of   16
37   13  to the right of   11
38   14  to the right of   11
39   14  to the right of   17
40   16               on    1
41   16   to the left of   11
42   16   to the left of   13
43   16   to the left of   10
44   16   to the left of    4
45   17   to the left of    6
46   17   to the left of    9
47   17   to the left of   14
48   18  to the right of    3