The snow is covering what?
The snow is covering the ground.
    src        edge_attr  dst
0     0       covered by    6
1     1  to the right of   18
2     1  to the right of   17
3     1  to the right of   12
4     6         covering   11
5     6               on   11
6     8   to the left of   18
7     9  to the right of   13
8     9   to the left of   17
9     9   to the left of   18
10   10               on   15
11   11       covered in    6
12   11       covered by    6
13   12   to the left of    1
14   12  to the right of   14
15   13   to the left of   15
16   13   to the left of   14
17   13   to the left of    9
18   14      standing in    6
19   14          wearing    8
20   14       walking in    6
21   14               in    6
22   14          holding   15
23   14  to the right of   13
24   14   to the left of   12
25   14   to the left of   18
26   14   to the left of   17
27   15  to the right of   13
28   16  to the right of   17
29   16  to the right of   18
30   16          next to   18
31   17   to the left of    1
32   17  to the right of   14
33   17  to the right of    9
34   17   to the left of   16
35   18          wearing   17
36   18      standing in    6
37   18       staring at    6
38   18             near   16
39   18       walking in    6
40   18               in    6
41   18  to the right of    8
42   18   to the left of   16
43   18  to the right of   14
44   18   to the left of    1
45   18  to the right of    9
46   18          wearing   12