What kind of sauce is on the food on the left side?
The sauce is ketchup.
    src        edge_attr  dst
0     1  to the right of    3
1     1  to the right of    4
2     1  to the right of    2
3     2   to the left of    1
4     2             with    4
5     2   to the left of    6
6     3   to the left of    1
7     3  to the right of    4
8     4               on    2
9     4   to the left of    1
10    4   to the left of    3
11    6  to the right of    2