Are there both meat and lettuce in the image?
Yes, there are both lettuce and meat.
    src       edge_attr  dst
0     0  to the left of   12
1     0  to the left of   13
2     0  to the left of   16
3     0  to the left of   14
4     0  to the left of   11
..  ...             ...  ...
66   17  to the left of    3
67   17  to the left of   12
68   17  to the left of   14
69   17  to the left of    6
70   17  to the left of   15

[71 rows x 3 columns]