Which kind of food is in the bowl?
The food is a sandwich.
    src        edge_attr  dst
0     1   to the left of    9
1     2           inside    7
2     2  to the right of    5
3     3               on    7
4     3   to the left of    6
5     4             with    9
6     5               on    7
7     5           inside    7
8     5   to the left of    2
9     5   to the left of    6
10    6        on top of    7
11    6  to the right of    7
12    6  to the right of    3
13    6  to the right of    5
14    7           inside    8
15    7             with    3
16    7               in    8
17    7   to the left of    6
18    7             with    5
19    9               on    4
20    9  to the right of    1