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