Is the floor made out of the same material as the shelf?
Yes, both the floor and the shelf are made of wood.
    src        edge_attr  dst
0     0   to the left of   15
1     0  to the right of    5
2     0  to the right of    1
3     0  to the right of    8
4     1   to the left of    8
..  ...              ...  ...
75   16   to the left of    4
76   16  to the right of    5
77   16   to the left of   15
78   16  to the right of   12
79   16   to the left of   13

[80 rows x 3 columns]