What animal is the wall behind of?
The wall is behind the dog.
    src        edge_attr  dst
0     0   to the left of    9
1     0   to the left of    2
2     1   to the left of    2
3     2  to the right of    3
4     2  to the right of    1
5     2      in front of   10
6     2            above    6
7     2  to the right of    0
8     3   to the left of    9
9     3   to the left of    2
10    5               on    2
11    7               on    5
12    9  to the right of    3
13    9  to the right of    0
14   10           behind    2