What type of vegetable is on the sandwich in the top part of the image?
The vegetables are pickles.
    src        edge_attr  dst
0     0               on   10
1     1   to the left of    2
2     2  to the right of    1
3     2               on    9
4     3               on    9
5     3   to the left of   13
6     4   to the left of   13
7     5               on   10
8     6   to the left of   13
9     7   to the left of   13
10    7               in    6
11    9             with    3
12    9             with   11
13    9             with    2
14   10             with    0
15   10   to the left of   13
16   10             with    5
17   11               on    9
18   13  to the right of    7
19   13  to the right of    3
20   13  to the right of   10
21   13  to the right of    6
22   13  to the right of    4