Is the food to the left or to the right of the person that is holding the umbrella?
The food is to the left of the person.
     src        edge_attr  dst
0      0   to the left of   21
1      0   to the left of   18
2      0   to the left of   28
3      0   to the left of   23
4      1   to the left of    5
..   ...              ...  ...
215   31  to the right of    5
216   32   to the left of   27
217   32  to the right of   26
218   32   to the left of   25
219   32  to the right of    5

[220 rows x 3 columns]