What is holding the food the bird is eating?
The feeder is holding the food.
    src        edge_attr  dst
0     0           eating    8
1     0   to the left of    4
2     0       perched on    4
3     0   to the left of    8
4     1   to the left of    2
5     2  to the right of    1
6     2   to the left of    7
7     3  to the right of    5
8     3   to the left of    4
9     3   to the left of    8
10    4  to the right of    5
11    4  to the right of    3
12    4          holding    8
13    4  to the right of    0
14    5   to the left of    3
15    5   to the left of    4
16    5   to the left of    8
17    6   to the left of    7
18    7          holding    4
19    7  to the right of    6
20    7  to the right of    2
21    8  to the right of    0
22    8  to the right of    3
23    8  to the right of    5