What is the snow on?
The snow is on the rock.
    src        edge_attr  dst
0     1               by    7
1     1   to the left of    7
2     2   to the left of    3
3     2               on    6
4     2   to the left of   10
5     2   to the left of    7
6     3  to the right of    2
7     4               in    1
8     4   to the left of    7
9     5             near    6
10    6               by    7
11    6            below    7
12    6             near    5
13    7               on    6
14    7  to the right of    2
15    7  to the right of    1
16    7  to the right of    4
17    7            above    6
18   10  to the right of    2