What is on the refrigerator?
The cereal box is on the refrigerator.
    src        edge_attr  dst
0     1  to the right of    6
1     1  to the right of   10
2     1  to the right of    9
3     2   to the left of    7
4     2   to the left of   20
..  ...              ...  ...
72   20  to the right of   13
73   20  to the right of   15
74   20  to the right of    2
75   20  to the right of    8
76   20               of    7

[77 rows x 3 columns]