Which place is it?
It is an airport.
     src        edge_attr  dst
0      0   to the left of   18
1      0   to the left of   16
2      0  to the right of   11
3      0  to the right of    1
4      0  to the right of   12
..   ...              ...  ...
102   21  to the right of    7
103   21  to the right of    9
104   21  to the right of   10
105   21  to the right of    8
106   21  to the right of    2

[107 rows x 3 columns]