What is tied to the post?
The chain is tied to the post.
    src        edge_attr  dst
0     2  to the right of    5
1     5          wearing    9
2     5   to the left of    6
3     5   to the left of    2
4     5  to the right of   12
5     5  to the right of   11
6     6  to the right of    5
7     6  to the right of    7
8     7  to the right of   12
9     7   to the left of    6
10    8       covered in   10
11    9  to the right of   11
12    9  to the right of   12
13   11   to the left of    5
14   11  to the right of   12
15   11   to the left of    9
16   12   to the left of    7
17   12   to the left of    9
18   12   to the left of    5
19   12   to the left of   11
20   12          tied to   11