Are the post and the pole made of the same material?
Yes, both the post and the pole are made of wood.
    src        edge_attr  dst
0     2  to the right of    8
1     2   to the left of   12
2     2   to the left of   10
3     3   to the left of    7
4     4   to the left of    5
5     5  to the right of    4
6     7  to the right of    3
7     8  to the right of    9
8     8   to the left of    2
9     9   to the left of    8
10    9             near   10
11   10  to the right of    2
12   10             near    9
13   11        flying in    0
14   11               in    1
15   11         carrying    5
16   11               on    8
17   12               on    2
18   12  to the right of    2