What is the bicycle on?
The bicycle is on the sign.
     src        edge_attr  dst
0      0  to the right of    9
1      0  to the right of   12
2      0      in front of   18
3      0  to the right of   10
4      0  to the right of   15
..   ...              ...  ...
154   22  to the right of    9
155   22   to the left of   16
156   22  to the right of   14
157   22           behind   10
158   22  to the right of   21

[159 rows x 3 columns]