Which kind of food is green, the lemon or the onion?
The onion is green.
    src        edge_attr  dst
0     1  to the right of   17
1     1  to the right of   16
2     1  to the right of   18
3     1  to the right of   24
4     1  to the right of   15
..  ...              ...  ...
76   22  to the right of   16
77   24   to the left of    1
78   24  to the right of    6
79   24   to the left of    9
80   24   to the left of   22

[81 rows x 3 columns]