Is the fence made of the same material as the pole?
No, the fence is made of wood and the pole is made of metal.
    src        edge_attr  dst
0     0      in front of    7
1     0   to the left of    2
2     1        on top of    3
3     2            below    5
4     2  to the right of    0
5     2  to the right of    4
6     3      in front of    7
7     3  to the right of    4
8     4   to the left of    3
9     4   to the left of    2
10    4   to the left of    8
11    4   to the left of    5
12    5        on top of    3
13    5  to the right of    8
14    5  to the right of    4
15    7           behind    0
16    7           behind    3
17    8   to the left of    5
18    8  to the right of    4