Are there both lettuce and salad in this scene?
Yes, there are both lettuce and salad.
    src        edge_attr  dst
0     1   to the left of   11
1     1  to the right of    7
2     2  to the right of    5
3     3   to the left of   13
4     4  to the right of    9
5     5   to the left of   13
6     5   to the left of    2
7     6        on top of    0
8     6   to the left of    7
9     6   to the left of    8
10    7   to the left of   11
11    7   to the left of    1
12    7  to the right of    6
13    8   to the left of   10
14    8   to the left of   14
15    8  to the right of    6
16    8           inside    9
17    9        on top of    2
18    9   to the left of   14
19    9   to the left of    4
20    9   to the left of   10
21   10  to the right of    8
22   10  to the right of    9
23   10             with   14
24   10        on top of    2
25   11        on top of    0
26   11  to the right of    1
27   11  to the right of    7
28   13  to the right of    3
29   13  to the right of    5
30   13        on top of    2
31   14        on top of   10
32   14  to the right of    9
33   14  to the right of    8