Which kind of food is to the right of the tomato?
The food is meat.
    src        edge_attr  dst
0     0   to the left of    1
1     0   to the left of    3
2     1  to the right of    3
3     1  to the right of    2
4     1  to the right of    4
5     1  to the right of    0
6     2   to the left of    1
7     2            above    4
8     3   to the left of    1
9     3  to the right of    0
10    4   to the left of    1
11    4            under    2