The bench to the left of the train is of which color?
The bench is black.
     src        edge_attr  dst
0      0  to the right of   20
1      0  to the right of   15
2      0  to the right of   12
3      0  to the right of    2
4      0  to the right of    1
..   ...              ...  ...
166   30  to the right of   22
167   30  to the right of   29
168   30  to the right of   26
169   31  to the right of   11
170   31  to the right of   19

[171 rows x 3 columns]