Is there lettuce under the bun on top of the tomato?
Yes, there is lettuce under the bun.
    src        edge_attr  dst
0     0            above    4
1     0            below    2
2     0  to the right of    3
3     0            under    2
4     2            above    4
5     2        on top of    3
6     2            above    0
7     2            above    3
8     3            above    4
9     3            under    2
10    3   to the left of    0
11    4            under    0
12    4            under    2
13    4            under    3
14    4            below    3
15    7   to the left of   12
16   12  to the right of    7