What's the cup stacked on?
The cup is stacked on the mug.
    src        edge_attr  dst
0     2               of    1
1     4       stacked on   17
2     4       stacked on   16
3     4  to the right of   12
4     5  to the right of   20
5     6      in front of    7
6     6  to the right of   20
7     6  to the right of    9
8     7           behind   20
9     7           behind   21
10    7           behind    6
11    8   to the left of   10
12    8   to the left of   11
13    8  to the right of   13
14    8  to the right of   14
15    9   to the left of    6
16    9   to the left of   20
17    9   to the left of   21
18   10  to the right of    8
19   10  to the right of   12
20   10               on   18
21   11  to the right of    8
22   12   to the left of   17
23   12   to the left of    4
24   12   to the left of   10
25   13   to the left of    8
26   14   to the left of    8
27   16  to the right of   17
28   17  to the right of   12
29   17   to the left of   16
30   20      in front of    7
31   20  to the right of    9
32   20   to the left of    6
33   20   to the left of    5
34   21  to the right of    9
35   21      in front of    7