What is the motorcycle on?
The motorbike is on the bed.
    src        edge_attr  dst
0     0               on    4
1     0  to the right of    5
2     0  to the right of    8
3     1  to the right of    2
4     1               on    4
5     1  to the right of    8
6     1  to the right of    5
7     2   to the left of    1
8     4  to the right of    8
9     4   to the left of    7
10    5   to the left of    1
11    5   to the left of    0
12    6               on    7
13    7  to the right of    4
14    8   to the left of    0
15    8   to the left of    4
16    8   to the left of    1