What is the color of the vehicle that the trash can is to the right of?
The car is gray.
    src        edge_attr  dst
0     0   to the left of    1
1     0   to the left of   18
2     0  to the right of    9
3     1       walking on   18
4     1          wearing   10
..  ...              ...  ...
70   18  to the right of    0
71   18  to the right of   15
72   18  to the right of   17
73   18  to the right of    9
74   18  to the right of   11

[75 rows x 3 columns]