Are there people to the left of the man that is wearing a vest?
Yes, there is a person to the left of the man.
    src        edge_attr  dst
0     1   to the left of   31
1     2  to the right of    4
2     2   to the left of   19
3     3   to the left of    9
4     4   to the left of   15
..  ...              ...  ...
66   30  to the right of   31
67   31   to the left of   30
68   31  to the right of    1
69   31  to the right of   23
70   32               of   21

[71 rows x 3 columns]