Where is the snow?
The snow is on the ground.
    src        edge_attr  dst
0     0   to the left of    1
1     0  to the right of    3
2     0  to the right of    2
3     0   to the left of    8
4     1  to the right of    7
5     1  to the right of    5
6     1  to the right of    0
7     2   to the left of    9
8     2   to the left of    7
9     2   to the left of    0
10    3               on    2
11    3   to the left of    0
12    3   to the left of    9
13    3   to the left of    7
14    5   to the left of    1
15    7  to the right of    2
16    7  to the right of    3
17    7   to the left of    1
18    8  to the right of    0
19    9  to the right of    2
20    9  to the right of    3