Is the girl to the right or to the left of the lady?
The girl is to the right of the lady.
    src        edge_attr  dst
0     1   to the left of   10
1     1   to the left of   20
2     2   to the left of   15
3     2   to the left of   10
4     2  to the right of   19
..  ...              ...  ...
72   19   to the left of    2
73   19   to the left of    4
74   20  to the right of    9
75   20  to the right of    1
76   21   to the left of    8

[77 rows x 3 columns]