What is in front of the brick wall?
The fire hydrant is in front of the wall.
    src        edge_attr  dst
0     0  to the right of    1
1     0  to the right of    5
2     1        on top of    2
3     1        on top of    3
4     1   to the left of    0
5     1  to the right of    7
6     2      in front of    6
7     2       covered by    8
8     3       covered in    1
9     4   on the side of    2
10    4       hanging on    2
11    5   on the side of    6
12    5               by    6
13    5   to the left of    0
14    6           behind    2
15    7   to the left of    1
16    8         covering    2