What vehicle is the man on?
The man is on the bus.
     src        edge_attr  dst
0      1  to the right of    4
1      1   to the left of    7
2      1  to the right of   16
3      2               on   12
4      2   to the left of    9
..   ...              ...  ...
141   22  to the right of    8
142   22  to the right of    6
143   22  to the right of   16
144   22  to the right of   15
145   22  to the right of   14

[146 rows x 3 columns]