What is the vehicle that is driving down the road made of cement?
The vehicle is a van.
     src        edge_attr  dst
0      0  to the right of   45
1      0  to the right of   23
2      1  to the right of   47
3      1   to the left of   21
4      1  to the right of   27
..   ...              ...  ...
261   48  to the right of   45
262   49   to the left of   37
263   49   to the left of   36
264   49   to the left of   20
265   49   to the left of   47

[266 rows x 3 columns]