What is the man tying?
The man is tying the boot.
    src        edge_attr  dst
0     0           behind    6
1     0  to the right of    9
2     0  to the right of    2
3     0  to the right of    8
4     0  to the right of    6
5     1   to the left of    4
6     1               on    3
7     2   to the left of    0
8     2   to the left of    4
9     3         covering    4
10    3         covering    7
11    4  to the right of    2
12    4       covered by    3
13    4  to the right of    8
14    4  to the right of    1
15    6      standing on    3
16    6               in    3
17    6      in front of    0
18    6          wearing    9
19    6   to the left of    0
20    6    standing near    0
21    6            tying    5
22    6               on    3
23    7             near   10
24    7       covered by    3
25    7       covered in    3
26    8  to the right of   10
27    8   to the left of    4
28    8   to the left of    0
29    9   to the left of    0
30   10          next to    7
31   10   to the left of    8