What is the man on, a train or a bus?
The man is on a bus.
    src        edge_attr  dst
0     0  to the right of    6
1     0  to the right of    7
2     0  to the right of    9
3     0  to the right of   11
4     0  to the right of   12
..  ...              ...  ...
70   16               on   13
71   16   to the left of   10
72   16  to the right of    2
73   16  to the right of    3
74   17   to the left of    4

[75 rows x 3 columns]