That snow is covering what?
The snow is covering the trees.
    src             edge_attr  dst
0     0        to the left of    9
1     0       to the right of    7
2     1       to the right of    7
3     2        to the left of    9
4     3       to the right of   14
5     3       to the right of   18
6     3            covered by   10
7     5        to the left of   13
8     5       to the right of    7
9     5        to the left of   11
10    7        to the left of    9
11    7        to the left of   12
12    7        to the left of    0
13    7        to the left of    1
14    7        to the left of    5
15    7        to the left of   13
16    7        to the left of   11
17    8       to the right of   17
18    9       to the right of    2
19    9       to the right of    7
20    9       to the right of    0
21    9                    of   15
22   10              covering   18
23   11       to the right of    5
24   11       to the right of    7
25   12               wearing   13
26   12                    on    6
27   12       to the right of    7
28   13       to the right of    5
29   13       to the right of    7
30   14        to the left of    3
31   14        to the left of   20
32   17        to the left of    8
33   18  on the other side of   14
34   18        to the left of    3
35   18        to the left of   20
36   18            covered by   10
37   19            covered by   10
38   20       to the right of   18
39   20       to the right of   14