What vehicle is the driver inside of?
The driver is inside the bus.
    src        edge_attr  dst
0     0        on top of   12
1     0               on   12
2     0          wearing    3
3     0  to the right of   10
4     0   to the left of    4
..  ...              ...  ...
56   18        on top of   19
57   19   to the left of   15
58   19  to the right of   16
59   19   to the left of    7
60   19   to the left of    9

[61 rows x 3 columns]