What is the vegetable on the mushroom pizza called?
The vegetable is a tomato.
    src        edge_attr  dst
0     0  to the right of   10
1     1  to the right of   13
2     1   to the left of   10
3     1   to the left of   19
4     1  to the right of   16
5     1   to the left of    2
6     1   to the left of    9
7     1  to the right of    5
8     2  to the right of    1
9     3  to the right of   21
10    4  to the right of   19
11    5   to the left of    6
12    5   to the left of    1
13    6               on    7
14    6   to the left of   10
15    6  to the right of    5
16    6   to the left of   11
17    7             with   12
18    7             with   13
19    7             with    6
20    7             with   11
21    7             with   19
22    7             with   14
23    7             with   18
24    7            above   21
25    7               on   21
26    9  to the right of    1
27   10  to the right of   11
28   10   to the left of    0
29   10  to the right of    1
30   10  to the right of    6
31   11  to the right of    6
32   11   to the left of   10
33   11               on    7
34   12               on    7
35   13   to the left of    1
36   13               on    7
37   14               on    7
38   16   to the left of    1
39   18               on    7
40   18   to the left of   19
41   18  to the right of   21
42   19   to the left of    4
43   19               on    7
44   19  to the right of   21
45   19  to the right of    1
46   19  to the right of   18
47   21   to the left of   18
48   21   to the left of   19
49   21   to the left of    3
50   21            under    7