Is there any food to the left of the vendor that is to the left of the person?
Yes, there is food to the left of the vendor.
     src        edge_attr  dst
0      0  to the right of    9
1      0  to the right of   32
2      0  to the right of   10
3      1  to the right of    5
4      1   to the left of   10
..   ...              ...  ...
213   37   to the left of    6
214   37   to the left of   10
215   37   to the left of   31
216   37   to the left of   32
217   37  to the right of    5

[218 rows x 3 columns]