What is the building covered in?
The building is covered in snow.
    src        edge_attr  dst
0     0   to the left of   10
1     1  to the right of   11
2     1   to the left of   10
3     1   to the left of    4
4     1  to the right of   17
5     1  to the right of   16
6     1  to the right of    9
7     3   to the left of   18
8     3   to the left of   15
9     3   to the left of    5
10    4   to the left of    6
11    4   to the left of   19
12    4  to the right of    1
13    5   to the left of    8
14    5   to the left of   13
15    5  to the right of    3
16    6  to the right of    4
17    7  to the right of   11
18    7  to the right of   16
19    7  to the right of   17
20    7  to the right of    9
21    7   to the left of   10
22    8  to the right of    5
23    9  to the right of   16
24    9   to the left of    7
25    9   to the left of    1
26    9   to the left of   17
27   10  to the right of    7
28   10  to the right of   17
29   10  to the right of   14
30   10  to the right of    0
31   10  to the right of    1
32   11   to the left of    1
33   11   to the left of    7
34   12  to the right of   15
35   12  to the right of   18
36   12               in   10
37   13  to the right of    5
38   14               by    3
39   14   to the left of   10
40   14       covered in    1
41   15   to the left of   12
42   15  to the right of    3
43   16   to the left of    9
44   16   to the left of   17
45   16   to the left of    7
46   16   to the left of    1
47   17   to the left of    7
48   17   to the left of   10
49   17   to the left of    1
50   17  to the right of   16
51   17  to the right of    9
52   18  to the right of    3
53   18   to the left of   12
54   19  to the right of    4