What is that man wearing?
The man is wearing a helmet.
    src        edge_attr  dst
0     1               of   11
1     1   to the left of   10
2     3               on   11
3     3          wearing    2
4     4  to the right of    5
5     5   to the left of    4
6     6   to the left of    9
7     7   to the left of   10
8     9  to the right of    6
9    10  to the right of    7
10   10  to the right of    1
11   12           riding   11
12   12          driving   11
13   12               on   11