Is the black backpack to the left or to the right of the man on the left?
The backpack is to the right of the man.
     src        edge_attr  dst
0      0   to the left of   17
1      0   to the left of    5
2      0  to the right of   12
3      0   to the left of    6
4      0   to the left of   24
..   ...              ...  ...
511   44  to the right of    5
512   44  to the right of   17
513   44  to the right of   28
514   44  to the right of    6
515   44  to the right of    0

[516 rows x 3 columns]