Is the boy to the left or to the right of the man?
The boy is to the left of the man.
    src        edge_attr  dst
0     0  to the right of   10
1     0  to the right of   13
2     1  to the right of    7
3     2   to the left of    8
4     2   to the left of   15
..  ...              ...  ...
62   18   to the left of   11
63   18   to the left of   15
64   18   to the left of    8
65   18           behind   20
66   20      in front of   18

[67 rows x 3 columns]