Is there any broccoli on the plate that is not empty?
Yes, there is broccoli on the plate.
    src        edge_attr  dst
0     0               on    6
1     0   to the left of    5
2     1   to the left of    3
3     1               on    6
4     1   to the left of   11
5     2   to the left of    5
6     2   to the left of    4
7     2               on    6
8     3  to the right of    1
9     3  to the right of   11
10    4               on    6
11    4  to the right of    2
12    5               on    6
13    5  to the right of    7
14    5  to the right of    0
15    5  to the right of    2
16    6               on    9
17    7   to the left of    5
18   11  to the right of    1
19   11   to the left of    3