Which kind of food is on the plate?
The food is mushrooms.
    src        edge_attr  dst
0     0   to the left of    2
1     0               on    4
2     0   to the left of    1
3     1  to the right of    3
4     1  to the right of    0
5     1  to the right of    2
6     1               on    4
7     2        on top of    3
8     2  to the right of    0
9     2   to the left of    1
10    2               on    4
11    3               on    4
12    3   to the left of    1