Which kind of food is to the left of the bread?
The food is meat.
    src        edge_attr  dst
0     1  to the right of   11
1     1  to the right of    5
2     2  to the right of   10
3     2   to the left of   14
4     3   to the left of    4
5     4  to the right of    3
6     4   to the left of    8
7     4  to the right of   10
8     5   to the left of    1
9     5  to the right of   11
10    5   to the left of    6
11    6  to the right of    5
12    6   to the left of   12
13    8  to the right of    4
14    9   to the left of   13
15   10   to the left of    2
16   10   to the left of    4
17   11   to the left of    1
18   11   to the left of    5
19   12  to the right of    6
20   13               on    0
21   13  to the right of    9
22   14  to the right of    2