What grows behind the bench made of stone?
The moss grows behind the bench.
    src        edge_attr  dst
0     2   to the left of    4
1     3  to the right of    9
2     4  to the right of    9
3     4  to the right of    8
4     4  to the right of    2
5     6       growing in   12
6     8   to the left of    4
7     8   growing behind    9
8     8           beside    9
9     8   on the back of    9
10    9   to the left of    4
11    9   to the left of    3
12   10           behind   12
13   10       covered by   11
14   10       covered in   11
15   11         covering   10