What do you think is the person in front of the building exiting?
The person is exiting the train.
     src       edge_attr  dst
0      0  to the left of    6
1      0         exiting   15
2      0     in front of   11
3      0  to the left of   20
4      0  to the left of    5
..   ...             ...  ...
220   23  to the left of    5
221   23  to the left of    6
222   23  to the left of   19
223   23  to the left of   15
224   23  to the left of   17

[225 rows x 3 columns]