What is covered by the snow?
The mountains are covered by the snow.
     src        edge_attr  dst
0      0   to the left of   18
1      0   to the left of   17
2      0   to the left of   20
3      0  to the right of   19
4      0   to the left of   24
..   ...              ...  ...
111   26  to the right of   21
112   26   to the left of   19
113   26   to the left of    2
114   26  to the right of    8
115   26      in front of   24

[116 rows x 3 columns]