What does the man hold?
The man holds the towel.
    src        edge_attr  dst
0     3         carrying    4
1     3          holding    2
2     3           behind   17
3     5  to the right of    6
4     6   to the left of    5
5     7   to the left of   11
6     7   to the left of    8
7     8  to the right of    7
8    10               in    0
9    10               in    9
10   11  to the right of    7
11   12               on   15
12   14               in    9
13   18          wearing    1
14   18         watching    9