What is pulled by the person that is wearing boots?
The suitcase is pulled by the person.
    src        edge_attr  dst
0     1  to the right of   10
1     2  to the right of    6
2     2   to the left of    3
3     2   to the left of    4
4     2   to the left of    8
5     3          pulling    9
6     3  to the right of    2
7     3          wearing    4
8     3  to the right of    6
9     3          wearing    5
10    4  to the right of    6
11    4  to the right of    2
12    5  to the right of   10
13    6   to the left of    9
14    6   to the left of    2
15    6   to the left of    8
16    6   to the left of    4
17    6   to the left of    3
18    7   to the left of   13
19    8  to the right of    6
20    8  to the right of    2
21    9        pulled by    3
22    9      in front of   12
23    9  to the right of    6
24   10               on    9
25   10   to the left of    5
26   10   to the left of    1
27   12           behind    9
28   13  to the right of    7