Are there either cucumbers or sandwiches?
Yes, there is a sandwich.
    src       edge_attr  dst
0     0  to the left of    7
1     0  to the left of    8
2     0  to the left of   16
3     0  to the left of    3
4     0  to the left of   14
..  ...             ...  ...
73   17          eating   14
74   17         wearing   13
75   17  to the left of    6
76   17         wearing    0
77   17  to the left of    5

[78 rows x 3 columns]