Is the red train to the right or to the left of the man?
The train is to the right of the man.
    src        edge_attr  dst
0     1  to the right of   12
1     1  to the right of   11
2     1  to the right of    8
3     1  to the right of    3
4     1  to the right of   19
..  ...              ...  ...
89   19  to the right of   14
90   19  to the right of    5
91   19   to the left of    1
92   19   to the left of   11
93   19  to the right of    6

[94 rows x 3 columns]