What is the bench surrounded by?
The bench is surrounded by the snow.
    src        edge_attr  dst
0     0     walking down    1
1     0          wearing    3
2     0          wearing    2
3     0          wearing    4
4     0          wearing   11
5     0       walking on    1
6     0   to the left of    6
7     0  to the right of    5
8     0  walking through    7
9     1             near    8
10    1   to the left of    8
11    2   to the left of    6
12    2  to the right of    5
13    3   to the left of    6
14    3  to the right of    5
15    4  to the right of    7
16    4   to the left of    6
17    5   to the left of    2
18    5   to the left of    0
19    5   to the left of    6
20    5   to the left of    3
21    6           behind    8
22    6             near    8
23    6   on the side of    1
24    6               in    9
25    6  to the right of    2
26    6  to the right of    0
27    6  to the right of    4
28    6  to the right of    3
29    6  to the right of   10
30    6  to the right of    5
31    7   to the left of    4
32    7   to the left of   11
33    8             near    1
34    8    surrounded by    9
35    8      in front of    6
36    8             near    6
37    8  to the right of    1
38    8   to the left of    9
39    9  to the right of   13
40    9  to the right of    8
41   10   to the left of    6
42   11  to the right of    7
43   12               on    6
44   13               on   12
45   13   to the left of    9