What kind of animal is the bowl behind of, a cat or a dog?
The bowl is behind a cat.
    src        edge_attr  dst
0     0        on top of    7
1     0      in front of    6
2     0      in front of   10
3     1   to the left of   14
4     3   to the left of    5
5     3   to the left of   18
6     4  to the right of   20
7     5  to the right of    3
8     6           behind    0
9     6  to the right of   20
10    6               on   20
11    7               on   12
12   10   to the left of   17
13   10           behind    0
14   11               on   12
15   14  to the right of    1
16   15  to the right of   20
17   17  to the right of   10
18   18  to the right of    3
19   20   to the left of    4
20   20               on   21
21   20   to the left of   15
22   20   to the left of    6