Is the black helmet to the right of a man?
Yes, the helmet is to the right of a man.
     src        edge_attr  dst
0      0   to the left of   10
1      0  to the right of    7
2      0  to the right of   11
3      0   to the left of    3
4      1   to the left of   10
..   ...              ...  ...
150   21  to the right of   16
151   21   to the left of   15
152   21          wearing   20
153   21          wearing   19
154   21          wearing    9

[155 rows x 3 columns]